{"id":365,"date":"2019-09-05T14:33:45","date_gmt":"2019-09-05T05:33:45","guid":{"rendered":"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/?page_id=365"},"modified":"2025-06-04T13:53:09","modified_gmt":"2025-06-04T04:53:09","slug":"tabletop-experiments-to-japanese-page","status":"publish","type":"page","link":"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/?page_id=365","title":{"rendered":"Particle physics with tabletop-sized Experiments"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-right\">(<a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/\">To Japanese page<\/a>)<\/h2>\n\n\n\n<h2 class=\"wp-block-heading\">Research<\/h2>\n\n\n\n<p>Our group (<a rel=\"noreferrer noopener\" aria-label=\"ICEPP  (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"http:\/\/www.icepp.s.u-tokyo.ac.jp\/en\/index.html\" target=\"_blank\">ICEPP<\/a> + <a href=\"http:\/\/www.icepp.s.u-tokyo.ac.jp\/asai\/eng.index.html\">Asai lab.<\/a>) searches for new physics beyond the standard model with various tabletop-sized experiments.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-4 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" data-id=\"87\" src=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/P1060827-300x225.jpg\" alt=\"\" class=\"wp-image-87\" srcset=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/P1060827-300x225.jpg 300w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/P1060827-768x576.jpg 768w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/P1060827-1024x768.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" data-id=\"88\" src=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/image_kamioka-300x225.jpg\" alt=\"\" class=\"wp-image-88\" srcset=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/image_kamioka-300x225.jpg 300w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/image_kamioka-768x576.jpg 768w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/image_kamioka-1024x768.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" data-id=\"89\" src=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/PA050067-300x225.jpg\" alt=\"\" class=\"wp-image-89\" srcset=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/PA050067-300x225.jpg 300w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/PA050067-768x576.jpg 768w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/PA050067-1024x768.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" data-id=\"898\" src=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/02\/IMG_0100-300x200.jpeg\" alt=\"\" class=\"wp-image-898\" srcset=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/02\/IMG_0100-300x200.jpeg 300w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/02\/IMG_0100-1024x683.jpeg 1024w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/02\/IMG_0100-768x512.jpeg 768w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/02\/IMG_0100-1536x1024.jpeg 1536w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/02\/IMG_0100-2048x1365.jpeg 2048w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/02\/IMG_0100-624x416.jpeg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" data-id=\"85\" src=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/DSC00533-300x200.jpg\" alt=\"\" class=\"wp-image-85\" srcset=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/DSC00533-300x200.jpg 300w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/DSC00533-768x512.jpg 768w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/DSC00533-1024x683.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" data-id=\"84\" src=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/DSC00249-300x200.jpg\" alt=\"\" class=\"wp-image-84\" srcset=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/DSC00249-300x200.jpg 300w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/DSC00249-768x512.jpg 768w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/DSC00249-1024x683.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"150\" data-id=\"83\" src=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/pslaser-300x150.jpg\" alt=\"\" class=\"wp-image-83\" srcset=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/pslaser-300x150.jpg 300w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/pslaser-768x385.jpg 768w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/pslaser-1024x513.jpg 1024w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/07\/pslaser.jpg 1420w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"DM_indirect_search\">Dark matter indirect search with multi-wavelength photons<\/h3>\n\n\n\n<p>If the dark matter in the universe is SUSY particle, the dark matter particles would concentrate in centers of galaxies and annihilate. We try to observe radio-waves and gamma-rays emitted from the annihilation processes.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2023\/04\/International_conference_on_the_physics_of_the_2_infinities.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Indirect detection of Dark Matter witth radio observation<\/a>, (C. Kawai et al., International Conference on the Physics of the Two Infinities (ILANCE Conference), Mar. 2023, Kyoto university)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/12\/Kawai_Kashiwa2021.pdf\" target=\"_blank\">Indirect detections of DM using Radio and Gamma<\/a>, (C. Kawai et al., Kashiwa dark matter symposium 2021, Dec. 2021, online)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/12\/kashiwadm2021-poster.pdf\" target=\"_blank\">Dark matter indirect searches using Radio and MeV gamma rays<\/a> (poster), (S. Asai et al., Kashiwa dark matter symposium 2021, Dec. 2021, online)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Photon_Photon\">Search for Photon-Photon scattering with XFEL<\/h3>\n\n\n\n<p>Observation of photon-photon elastic scattering is one of the ultimate  tests of QED. We search for this phenomenon by using the X-ray free  electron laser, SACLA.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a rel=\"noreferrer noopener\" aria-label=\"Light-by-light scattering at SACLA\/SPring-8 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/inada-desy2018.pdf\" target=\"_blank\">Light-by-light scattering at SACLA\/SPring-8<\/a>, (T. Inada, Probing strong-field QED in electron-photon interactions, Aug. 2018, DESY, Germany)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Probing Physics in Vacuum using an X-ray Free-Electron Laser, a High-Power Laser, and a High Field Magnet (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.3390\/app7070671\" target=\"_blank\">Probing Physics in Vacuum using an X-ray Free-Electron Laser, a High-Power Laser, and a High Field Magnet<\/a>, (T. Inada, et al., Applied science 7(2017)671, 12pages,<a rel=\"noreferrer noopener\" aria-label=\" arXiv: 1707.00253 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1707.00253\" target=\"_blank\"> arXiv: 1707.00253<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Search for X-ray photon-photon elastic scattering with a Laue-case beam collier (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/yamaji-lnpc17.pdf\" target=\"_blank\">Search for X-ray photon-photon elastic scattering with a Laue-case beam collier<\/a>, (T. Yamaji, Light driven Nuclear-Particle physics and Cosmology 2017 (LNPC\u201917), Apr. 2017, Pacifico Yokohama)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Probe into vacuum field using High-intensity X-ray Applications to the Particle Physics (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/asai-xopt17.pdf\" target=\"_blank\">Probe into vacuum field using High-intensity X-ray Applications to the Particle Physics<\/a>, (S. Asai, International Conference on X-ray Optics and Applications 2017 (XOPT\u201917), Apr. 2017, Pacifico Yokohama)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"An experiment of X-ray photon-photon elastic scattering with a Laue-case beam collide (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1016\/j.physletb.2016.11.003\" target=\"_blank\">An experiment of X-ray photon-photon elastic scattering with a Laue-case beam collide<\/a>r, (T. Yamaji, et al., Phys. Lett. B 763(2016)454-457,  <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1608.0639 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1608.06369\" target=\"_blank\">arXiv: 1608.0639<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Search for photon-photon scattering using the xFEL; Applications to the Particle Physics (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/asai-ringberg2015.pdf\" target=\"_blank\">Search for photon-photon scattering using the xFEL; Applications to the Particle Physics<\/a>, (S. Asai,  Feb. 2015, 6th Ringberg Meeting on Science with FELs, Schloss Ringberg, Germany)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Search for Photon-Photon Elastic Scattering in the X-ray Region (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1016\/j.physletb.2014.03.054\" target=\"_blank\">Search for Photon-Photon Elastic Scattering in the X-ray Region<\/a>, (T. Inada, T. Yamaji, et al.,  Physics Letters B 732(2014)356-359,  <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1403.2547 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1403.2547\" target=\"_blank\">arXiv: 1403.2547<\/a>)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"WISP_LSP\">Search for WISPs in various wavelengths with high-power light sources<\/h3>\n\n\n\n<p> Various searches for Weekly Interacting sub-eV particles (WISPs) are&nbsp;  under way. We use SPring-8 (in X-ray region) or a Gyrotron (in sub-THz  region) as a high-power light source to do the `light shining through a  wall\u2019 type experiments.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/03\/photonbeam-namba.pdf\" target=\"_blank\">Axion-like particle searches at SPring-8 synchrotron facility<\/a>, (T. Namba, 1st Workshop on New Light Physics and Photon-beam Experiments, Mar. 2021, online)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"First results from a hidden photon dark matter search in the meV sector using a plane-parabolic mirror system (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1088\/1475-7516\/2018\/11\/031\" target=\"_blank\">First results from a hidden photon dark matter search in the meV sector using a plane-parabolic mirror system<\/a>, (S. Knirck et al.,JCAP11(2018)031, <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1806.05120 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1806.05120\" target=\"_blank\">arXiv: 1806.05120<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Search for Axion Like Particles using Laue-case Conversion in a Single Crystal (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1016\/j.physletb.2018.05.068\" target=\"_blank\">Search for Axion Like Particles using Laue-case Conversion in a Single Crystal<\/a>, (T. Yamaji et al., Phys. Lett. B 782(2018)523-527, <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1802.08388 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1802.08388\" target=\"_blank\">arXiv: 1802.08388<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Search for Axion Like Particles using Laue-case Conversion in a Single Crystal (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/yamaji-Dron.pdf\" target=\"_blank\">Search for Axion Like Particles using Laue-case Conversion in a Single Crystal<\/a>, (T. Yamaji, Ph. D. thesis, Feb. 2018)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Theoretical Calculation of coherent Laue-case conversion between X rays and ALPS for an X-ray LSW experiment (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1103\/PhysRevD.96.115001\" target=\"_blank\">Theoretical Calculation of coherent Laue-case conversion between X rays and ALPS for an X-ray LSW experiment<\/a>, (T. Yamaji, et al., Phys. Rev. D 96(2017)115001, <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1709.03299 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1709.03299\" target=\"_blank\">arXiv: 1709.03299<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"LSW experiments with pulsed magnets + Vacuum Magnetic Birefringence (VMB) (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/inada-himafun2017.pdf\" target=\"_blank\">LSW experiments with pulsed magnets + Vacuum Magnetic Birefringence (VMB)<\/a>, (T. Inada, Workshop on HIgh MAgnetic Fields for FUNdamental Physics (HIMAFUN), 2017\/5\/30, University of Toulouse III, France)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Search for Hidden Photon Dark Matter(HPDM) using Dish Antenna in Millimeter-wave region (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/okesaku-lnpc17.pdf\" target=\"_blank\">Search for Hidden Photon Dark Matter(HPDM) using Dish Antenna in Millimeter-wave region<\/a>, (Y. Okesaku, Light driven Nuclear-Particle physics and Cosmology 2017 (LNPC\u201917), Apr. 2017, Pacifico Yokohama)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Search for Hidden Photon Dark Matter in the Millimeter Wave Regeion with a Dish Antenna (Poster), (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/IW-FIRT2017_poster_yamazaki.pdf\" target=\"_blank\">Search for Hidden Photon Dark Matter in the Millimeter Wave Regeion with a Dish Antenna (Poster),<\/a> (T. Yamazaki, The 6th International Workshop on Far-Infrared Technologies (IW-FIRT2017), Mar. 2017)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"WISPy Dark Matter Search with a Dish Antenna Setup in Tokyo (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/knirck-jps2016autumn.pdf\" target=\"_blank\">WISPy Dark Matter Search with a Dish Antenna Setup in Tokyo<\/a>, (Stefan Knirck, JPS 2016 autumn meeting, Sept. 2016)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Search for Two-Photon Interaction with Axionlike Particles Using High-Repetition Pulsed Magnets and Synchrotron X Rays (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1103\/PhysRevLett.118.071803\" target=\"_blank\">Search for Two-Photon Interaction with Axionlike Particles Using High-Repetition Pulsed Magnets and Synchrotron X Rays<\/a>, (T. Inada, et al., Phys.Rev.Lett. 118(2017)071803 6pp., <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1609.05425 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1609.05425\" target=\"_blank\">arXiv: 1609.05425<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Repeating Pulsed Manget System for axion-like Particle Searches and Vacuum Birefringence Experiments (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1016\/j.nima.2016.07.031\" target=\"_blank\">Repeating Pulsed Manget System for axion-like Particle Searches and Vacuum Birefringence Experiments<\/a>, (T. Yamazaki, et. al, NIM A 833(2016)122-126, <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1604.06556 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1604.06556\" target=\"_blank\">arXiv: 1604.06556<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Search for axion-like particles using strong pulsed magnets at SPring-8 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/inada-phDthesis.pdf\" target=\"_blank\">Search for axion-like particles using strong pulsed magnets at SPring-8<\/a>, (T. Inada, Ph. D. thesis, Feb. 2016)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Results of a Search for Paraphotons with Intense X-ray Beams at SPring-8 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/inada-patras2013.pdf\" target=\"_blank\">Results of a Search for Paraphotons with Intense X-ray Beams at SPring-8<\/a>, (T. Inada, 9th Patras Workshop on Axions, WIMPs and WISPs, June 2013, Mainz, Germany)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Hidden Particle Search using Sub-THz Gyrotron (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/130314-fukuisympo-suehara.pdf\" target=\"_blank\">Hidden Particle Search using Sub-THz Gyrotron<\/a>, (T. Suehara, International symposium on Development of Terahertz Gyrotrons and Applications, March 2013, Fukui University)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Results of a Search for Paraphotons with Intense X-ray Beams at SPring-8 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1016\/j.physletb.2013.04.033\" target=\"_blank\">Results of a Search for Paraphotons with Intense X-ray Beams at SPring-8<\/a>, (T. Inada, T. Namba, S. Asai, T. Kobayashi, Y. Tanaka, K. Tamasaku, K. Sawada, T. Ishikawa, Phys. Lett. B, 722 (2013) 301-304, <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1301.6557 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1301.6557\" target=\"_blank\">arXiv: 1301.6557<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Hidden Particle Search using Sub-THz Gyrotron (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/suehara-irmmw-2012.pdf\" target=\"_blank\">Hidden Particle Search using Sub-THz Gyrotron<\/a> (<a rel=\"noreferrer noopener\" aria-label=\" (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1109\/IRMMW-THz.2012.6380414\" target=\"_blank\">Proceedings<\/a>), (T. Suehara, The 37th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Sept. 2012, Wollongong Univ., Australia)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Ps_BEC\">Basic study for Bose-Einstein condensation of positronium<\/h3>\n\n\n\n<p>Since positronium is a particle of&nbsp; integer spin, cooled positronium  should create an exotic state, a Bose-Einstein condensate(BEC). However,  the BEC of positronium has not been observed yet because of its short  lifetime and the difficulty of its cooling. The basic study for the BEC  is now under way.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Recent progress towards positronium Bose-Einstein condensation, (A. Ishida, June 2025, 20th International Conference on Positron Annihilation (ICPA20), Kagawa International Conference Hall)<\/li>\n\n\n\n<li><a href=\"https:\/\/higgstan.com\/news-positronium\/\" target=\"_blank\" rel=\"noreferrer noopener\">Our Ps laser cooling is introduced by a comic strip<\/a> in <a href=\"https:\/\/higgstan.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">HiggsTan web site<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2024\/11\/O-12_PPC13_ishida_20241030mini.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Development of nanoporous materials to form dense and cold positronium for Bose-Einstein condensation<\/a>, (A. Ishida, October 2024, The 13th International Workshop on Positron and Positronium Chemistry (PPC13), Kanazawa Convention Bureau)<\/li>\n\n\n\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2024\/09\/Shu_EXALEAP2024_presentation_final.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Demonstration of one-dimentional chirp cooling of positronium to ultra-low temperatures<\/a>, (K. Shu, Internaltional Conference on Exotic Atoms and Related Topics and Conference on Low Energy Antiprotons (EXA\/LEAP2024), August 2024, Austria)<\/li>\n\n\n\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2024\/09\/EXA_LEAP2024_ishida_20240827r1.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Prospects for Positronium Bose-Einstein Condensation<\/a>, (A. Ishida, Internaltional Conference on Exotic Atoms and Related Topics and Conference on Low Energy Antiprotons (EXA\/LEAP2024), August 2024, Austria)<\/li>\n\n\n\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2024\/03\/QuantumBeamFesta_PsCOOL_Poster.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Influence of Positronium Annihilation in Nano-vacancies on Positronium Laser Cooling<\/a> (Poster), (R. W. Gladen, 2023 Quantum Beam Science Festa,  March 2024, Mito City Civic Center)<\/li>\n\n\n\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2024\/03\/QuantumBeamFesta_PsTOF_Poster.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Evaluation of Positronium Cooling in cold Nano-Porous Oxide Materials by Time-of-flight Measruement<\/a> (Poster), (R. W. Gladen, 2023 Quantum Beam Science Festa, March 2024, Mito City Civic Center)<\/li>\n\n\n\n<li><a href=\"https:\/\/doi.org\/10.1038\/s41586-024-07912-0\" target=\"_blank\" rel=\"noreferrer noopener\">Cooling positronium to ultralow velocities with a chirped laser pulse train<\/a>, (K. Shu et al., Nature (2024) doi: 10.1038\/s41586-024-07912-0, <a href=\"https:\/\/arxiv.org\/abs\/2310.08761\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 2310.08761<\/a>, <img loading=\"lazy\" decoding=\"async\" width=\"20\" height=\"22\" class=\"wp-image-1067\" style=\"width: 20px;\" src=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2022\/05\/undoukai_trophy_gold.png\" alt=\"\" srcset=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2022\/05\/undoukai_trophy_gold.png 367w, https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2022\/05\/undoukai_trophy_gold-272x300.png 272w\" sizes=\"auto, (max-width: 20px) 100vw, 20px\" \/><a href=\"https:\/\/physicsworld.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Physics World<\/a>: <a href=\"https:\/\/physicsworld.com\/a\/top-10-breakthroughs-of-the-year-in-physics-for-2024-revealed\/\" target=\"_blank\" rel=\"noreferrer noopener\">Top 10 Breakthroughs of the year in 2024<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2023\/09\/JPS2023_Poster_Gladen.pdf\" target=\"_blank\">Pulse Pile-up Deconvolution Methods via Machine Learning<\/a> (Poster), (R. W. Gladen, September 2023, Tohoku university)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2023\/07\/ICPEAC2023_ishida_20230727_mini.pdf\" target=\"_blank\">Recent progress towards positronium Bose-Einstein condensation<\/a>, (A. Ishida, XXXIII International Conference on Photonic, Electric and Atomic Collisions (ICPEAC 2023), July 2023, Ottawa, Canada)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/doi.org\/10.56646\/jjapcp.9.0_011202\" target=\"_blank\">Development of a porous silica cavity for laser excitation of confined positronium<\/a>, (Kenji Shu et al., JJAP Conf. Proc. 9(2023)011202)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2022\/12\/KURMeeting2022.pdf\" target=\"_blank\">Positronium Laser Cooling: Improving detector pulse analysis efficiency via machine learning<\/a>, (R. W. Gladen, KUR meeting 2022, December 2022, Hybrid, Japan)<\/li>\n\n\n\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2022\/09\/JPSAutumnMeeting2022_Final.pdf\">Positronium Laser Cooling: Improving detector pulse analysis efficiency via machine learning<\/a>, (R. W. Gladen, JPS 2022 autumn meeting, September 2022, Tokyo, Japan)<\/li>\n\n\n\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2022\/08\/ICPA_19_ishida_20220824_mod0826small.pdf\">Recent progress in positronium laser cooling<\/a>, (A. Ishida, 19th International Conference on Positron Annihilation (ICPA-19), August 2022, Helsinki, Finland (Online))<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2022\/07\/ICAP2022toronto_Tajima.pdf\" data-type=\"URL\" data-id=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2022\/07\/ICAP2022toronto_Tajima.pdf\" target=\"_blank\">Development of a Deep-ultraviolet Chirped Pulse Laser for Doppler Cooling of Positronium (poster)<\/a>, (Y. Tajima, The 27th international Conference on Atomic Physics (ICAP2022), July 2022, Toronto, Canada)<\/li>\n\n\n\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2022\/08\/GR23_kshu_upload.pdf\">Experimental progress towards measuring antimatter gravity using positronium<\/a>, (K. Shu, 23rd International Conference on General Relativity and Gravity, July 2022, Online)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/doi.org\/10.1103\/PhysRevA.104.L050801\" target=\"_blank\">Observation of orthopositronium thermalization in silica aerogel at cryogenic temperatures<\/a>, (K. Shu et al., Phys. Rev. A 104(2021)L050801)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/09\/Shu_PPC_small.pdf\" target=\"_blank\">Enhanced decay and line broadening of 2P ortho-positronium inside silica pores<\/a>, (K. Shu, 12.5th International Workshop on Positron and Positronium Chemistry (PPC12.5), September 2021, Online)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/09\/PPC12_5_ishida202108311530_mini-1.pdf\" target=\"_blank\">Dense positronium formation for Bose-Einstein condensation<\/a>, (A. Ishida, 12.5th International Workshop on Positron and Positronium Chemistry (PPC12.5), August 2021, Online)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/09\/Uozumi_presentation.pdf\" target=\"_blank\">Development of a high-resolution probing laser suited for cold positronium spectroscopy<\/a>, (R. Uozumi, 12.5th International Workshop on Positron and Positronium Chemistry (PPC12.5), August 2021, Online)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/09\/Tajima_Presentation.pdf\" target=\"_blank\">Development of a chirped pulse laser for cooling positronium<\/a>, (Y. Tajima, 12.5th International Workshop on Positron and Positronium Chemistry (PPC12.5), August 2021, Online)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/08\/Shu_FPUA2021.pdf\" target=\"_blank\">Experimental progress in physics of cold positronium<\/a>, (K. Shu, Fundamental Physics Using Atoms 2021 (FPUA2021), August 2021, Online)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/doi.org\/10.1103\/PhysRevApplied.16.014009\" target=\"_blank\">Theoretical Analysis and Experimental Demonstration of a Chirped Pulse-Train Generator and its Potential for Efficient Cooling of Positronium<\/a>, (K. Yamada et al., Physical Review Applied 16(2021)014009)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Laser Excitation of Confined Positronium in Porous Materials for Rapid Cooling (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2020\/02\/ShuDron20200130Submit.pdf\" target=\"_blank\">Laser Excitation of Confined Positronium in Porous Materials for Rapid Cooling<\/a>, (K. Shu, Doctor thesis, FY&#8217;19)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\" (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/11\/JWPS_v4_mini.pdf\" target=\"_blank\">Development of cooling laser for positronium Bose-Einstein condensation<\/a>, (K. Yamada, 4th Japan-China Joint Workshop on Positron Science (JWPS 2019), November 2019, Nara, Japan)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Development of focusing lens for high-density positron beam (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/11\/JWPS_hashidat_small.pdf\" target=\"_blank\">Development of focusing lens for high-density positron beam<\/a>, (K. Hashidate, 4th Japan-China Joint Workshop on Positron Science (JWPS 2019), November 2019, Nara, Japan)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Excitation of positronium by laser for efficient cooling (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/11\/JWPS2019shu_small.pdf\" target=\"_blank\">Excitation of positronium by laser for efficient cooling<\/a>, (K. Shu, 4th Japan-China Joint Workshop on Positron Science (JWPS 2019), November 2019, Nara, Japan)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\" (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/11\/JWPS2019ishida_small.pdf\" target=\"_blank\">Experimental progress towards positronium Bose-Einstein condensation<\/a>, (A. Ishida, 4th Japan-China Joint Workshop on Positron Science (JWPS 2019), October 2019, Nara, Japan)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Recent progress towards positronium Bose-Einstein condensation (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/ishida-slopos2019.pdf\" target=\"_blank\">Recent progress towards positronium Bose-Einstein condensation<\/a>, (A. Ishida,15th International Workshop on Positron Beam Techniques and Applications (SLOPOS-15), September 2019, Prague, Czech)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Experimental progress towards positronium Bose-Einstein condensation (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/ishida-icnfp2019.pdf\" target=\"_blank\">Experimental progress towards positronium Bose-Einstein condensation<\/a>, (A. Ishida, 8th International Conference on New Frontiers in Physics (ICNFP 2019), August 2019, Crete, Greece)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Recent Progress towards Positronium Bose-Einstein Condensation (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/yamada-fpua2019.pdf\" target=\"_blank\">Recent Progress towards Positronium Bose-Einstein Condensation<\/a>, (K. Yamada, The 11th International Workshop on Fundamental Physics Using Atoms (FPUA2019), March 2019, Okinawa, Japan)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Development of cooling system for positronium (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/ICPA18_shu.pdf\" target=\"_blank\">Development of cooling system for positronium<\/a>, (K. Shu, 18th International Conference on Positron Annihilation (ICPA-18), August 2018, Orland, USA)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Positron focusing system and positronium thermalization measurement for realizing Bose-Einstein condensation (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/ICPA18_ishida.pdf\" target=\"_blank\">Positron focusing system and positronium thermalization measurement for realizing Bose-Einstein condensation<\/a>, (A. Ishida, 18th International Conference on Positron Annihilation (ICPA-18), August 2018, Orland, USA)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Recent progress in positronium experiments for Bose-Einstein condensation (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/ishida-leap2018.pdf\" target=\"_blank\">Recent progress in positronium experiments for Bose-Einstein condensation<\/a>, (A. Ishida, Low Energy Antiproton Physics Conference 2018 (LEAP2018), March 2018, Paris, France)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Study on positronium Bose-Einstein condensation (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/ishida_jwps2017.pdf\" target=\"_blank\">Study on positronium Bose-Einstein condensation<\/a>, (A. Ishida, The 3rd China-Japan Joint Workshop on Positron Science (JWPS2017), June 2017, Hefei, China)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Toward a Realization of Bose-Einstein Condensation of Positronium (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/kshu_jagiellonian2017.pdf\" target=\"_blank\">Toward a Realization of Bose-Einstein Condensation of Positronium<\/a>, (K. Shu, 2nd Jagiellonian Symposium on Fundamental and Applied Subatomic Physics, June 2017 , Krakow, Poland)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Study on Bose-Einstein Condensation of Positronium (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/kshu-slopos14.pdf\" target=\"_blank\">Study on Bose-Einstein Condensation of Positronium<\/a>, (K. Shu, 14th International Workshop on Slow Positron Beam Techniques &amp; Applications (SLOPOS14), May 2016, Shimane Prefectural Convention Center)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Monte Carlo Simulation of Positronium Cooling for Bose-Einstein Condensation (Poster) (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/ishida-slopos14.pdf\" target=\"_blank\">Monte Carlo Simulation of Positronium Cooling for Bose-Einstein Condensation (Poster)<\/a>, (A. Ishida, 14th International Workshop on Slow Positron Beam Techniques &amp; Applications (SLOPOS14), May 2016, Shimane Prefectural Convention Center)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Study on Cooling of Positronium for Bose-Einstein Condensation (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/fpua2015-kshu.pdf\" target=\"_blank\">Study on Cooling of Positronium for Bose-Einstein Condensation<\/a>, (K. Shu, Fundamental Physics Using Atoms (FPUA2015), Dec. 2015, Riken Wako campus)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Study on Cooling of Positronium for Bose-Einstein Condensation (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1088\/0953-4075\/49\/10\/104001\" target=\"_blank\">Study on Cooling of Positronium for Bose-Einstein Condensation<\/a>, (K. Shu et al.,J. Phys. B: At. Mol. Opt. Phys. 49(2016)104001, <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1511.07924 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1511.07924\" target=\"_blank\">arXiv: 1511.07924<\/a>)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"OVAL\">Search for vacuum birefringence<\/h3>\n\n\n\n<p>The theory of Quantum Electro-Dynamics predicts a strange behavior of  vacuum. It will show birefringence under strong magnetic field. Our  group tries to observe this with a high finesse cavity and strong pulse  magnets.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/02\/Dron-kamioka.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Search For Vacuum Magnetic Birefringence with a high repetitive pulsed magnet<\/a>, (S. Kamioka, Ph. D. thesis, Feb. 2020)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"High magnetic fields for fundamental physics (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1016\/j.physrep.2018.07.005\" target=\"_blank\">High magnetic fields for fundamental physics<\/a>, (T. Inada et al., Physics Reports 765(2018)1, <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1803.07547 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1803.07547\" target=\"_blank\">arXiv: 1803.07547<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Vacuum Magnetic Birefringence Experiment as a probe of the Dark Sector (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1093\/ptep\/pty059\" target=\"_blank\">Vacuum Magnetic Birefringence Experiment as a probe of the Dark Sector<\/a>, (X. Fan et al., Prog. Theor. Exp. Phys., 2018, 063B06, <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1707.03609 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1707.03609\" target=\"_blank\">arXiv: 1707.03609<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Generalized Heisenberg-Euler Formula in Abelian Gauge Theory with Parity Violation (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1093\/ptep\/ptx157\" target=\"_blank\">Generalized Heisenberg-Euler Formula in Abelian Gauge Theory with Parity Violation<\/a>, (K. Yamashita(Ocha-dai) et al., Prog. Theor. Exp. Phys., 2017, 123B03, <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1707.03308 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1707.03308\" target=\"_blank\">arXiv: 1707.03308<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"he OVAL experiment: A new experiment to measure vacuum magnetic birefringence using high repetition pulsed magnets (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1140\/epjd\/e2017-80290-7\" target=\"_blank\">The OVAL experiment: A new experiment to measure vacuum magnetic birefringence using high repetition pulsed magnets<\/a>, (X. Fan et al., Euro. Phys. J. D 71(2017)308, <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1705.00495 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1705.00495\" target=\"_blank\">arXiv: 1705.00495<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Search for Vacuum Magnetic Birefringence with Pulsed Magnets (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/kamioka-lnpc17.pdf\" target=\"_blank\">Search for Vacuum Magnetic Birefringence with Pulsed Magnets<\/a>, (S. Kamioka, Light driven Nuclear-Particle physics and Cosmology 2017 (LNPC\u201917), Apr. 2017, Pacifico Yokohama)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Search for Vacuum Magnetic Birefringence with Pulsed Magnets (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/kamioka-fpua2017.pdf\" target=\"_blank\">Search for Vacuum Magnetic Birefringence with Pulsed Magnets<\/a>, (S. Kamioka, 9th International workshop on Fundamental Physics Using Atoms (FPUA), Jan. 2017, Kyoto University)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Search for Vacuum Magnetic Birefringence with Pulsed Magnet (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/fpua2015-xfan.pdf\" target=\"_blank\">Search for Vacuum Magnetic Birefringence with Pulsed Magnet<\/a>, (X. Fan, Fundamental Physics Using Atoms (FPUA2015), Dec. 2015, Riken Wako campus)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"VD_search\">Search for vacuum diffraction with an XFEL and high power laser beams<\/h3>\n\n\n\n<p>A focused high power laser can create a strong electro-magnetic field.  Under this field, X-rays are predicted to be bent. We search this  phenomena, X-ray diffraction in vacuum, at an XFEL site, SACLA.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2023\/07\/phfs2023-namba.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Search for the vacuum diffraction using an x-ray free electron laser and a high-power laser<\/a>, (T. Namba, The 79th Fujihara Seminar: Prospects for High Field Science (PHFS2023), Jul. 2023, Awaji Yumebutai International Conference Center, Hyogo)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2021\/02\/Dron-yseino.pdf\" target=\"_blank\">Search For the Vacuum Polarization using a high-field laser and an XFEL<\/a>, (Y. Seino, Ph. D thesis, Feb. 2020)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/doi.org\/10.1093\/ptep\/ptaa084\" target=\"_blank\">New Estimation of the Curvature Effect for the X-ray Vacuum Diffraction Induced by an Intense Laser Field<\/a>, (Y. Seino, et al., Prog. Theor. Exp. Phys. 2020, 073C02, <a rel=\"noreferrer noopener\" href=\"https:\/\/arxiv.org\/abs\/1912.01390\" target=\"_blank\">arXiv: 1912.01390<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Search for Vacuum Diffraction Using high power laser and X-ray Free Electron Laser SACLA (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/seino-lnpc17.pdf\" target=\"_blank\">Search for Vacuum Diffraction Using high power laser and X-ray Free Electron Laser SACLA<\/a>, (Y. Seino, Light driven Nuclear-Particle physics and Cosmology 2017 (LNPC\u201917), Apr. 2017, Pacifico Yokohama)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Search for Vacuum Diffraction Using X-ray Free Electron Laser SACLA (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/seino-fpua2017.pdf\" target=\"_blank\">Search for Vacuum Diffraction Using X-ray Free Electron Laser SACLA<\/a>, (Y. Seino, 9th International workshop on Fundamental Physics Using Atoms (FPUA), Jan. 2017, Kyoto University)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"oPs_spectrum\">Precision measurement of the energy spectrum in the orthopositronium decay<\/h3>\n\n\n\n<p>The decay spectrum of orthopositronium has rich information on  fundamental physics. We try to measure its shape in ~0.1% accuracy.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/adachi_IPPC2014.pdf\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"First test of O(\u03b1) correction on the energy spectrum in the orthopositronium decay (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\">First test of O(\u03b1) correction on the energy spectrum in the orthopositronium decay<\/a>, (S. Adachi, 11th International Workshop on Positron and Positronium Chemistry, Nov. 2014, Goa, India)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Ps_HFS\">Measurement of Positronium Hyper-fine splitting<\/h3>\n\n\n\n<p>Measurement of the energy level difference between ortho-positronium and para-positronium (0.84meV) at the ppm level.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a rel=\"noreferrer noopener\" aria-label=\"Measurement of Positronium thermalization in isobutane gas for precision measurement of ground-state hyperfine splitting (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1088\/0953-4075\/49\/6\/064008\" target=\"_blank\">Measurement of Positronium thermalization in isobutane gas for precision measurement of ground-state hyperfine splitting<\/a>, (A. Ishida et al., Journal of Phys. B 49(2016)064008)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"New precise measurement of the hyperfine splitting of positronium (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/ishida-thesis.pdf\" target=\"_blank\">New precise measurement of the hyperfine splitting of positronium<\/a>, (A. Ishida Ph. D thesis, Sep. 2014)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"First millimeter-wave spectroscopy of ground-state positronium (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1093\/ptep\/ptu181\" target=\"_blank\">First millimeter-wave spectroscopy of ground-state positronium<\/a>, (A. Miyazaki et al., Prog. Theor. Exp. Phys. 2015, 011C01, <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1403.0312 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1403.0312\" target=\"_blank\">arXiv: 1403.0312<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Direct Measurement of the Hyperfine Structure Interval of Positronium Using High Power Millimeter Wave Technology (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/miyazaki-Dron.pdf\" target=\"_blank\">Direct Measurement of the Hyperfine Structure Interval of Positronium Using High Power Millimeter Wave Technology<\/a>, (A. Miyazaki, Doctor thesis, FY\u201913, <a rel=\"noreferrer noopener\" aria-label=\" (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1007\/978-4-431-55606-0\" target=\"_blank\">Springer thesis ISBN: 978-4-435-5560-3<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"New Precision Measurement of Hyperfine Splitting of Positronium (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1016\/j.physletb.2014.05.083\" target=\"_blank\">New Precision Measurement of Hyperfine Splitting of Positronium<\/a>, (A. Ishida et al., Physics Letters B 734(2014)338, <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1310.6923 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1310.6923\" target=\"_blank\">arXiv: 1310.6923<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Sub-THz Spectroscopy of the Ground State Hyperfine Splitting of Positronium (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/PSI2013_yamazaki.pdf\" target=\"_blank\">Sub-THz Spectroscopy of the Ground State Hyperfine Splitting of Positronium<\/a>, (T. Yamazaki, 3rd Workshop on the Physics of Fundamental Symmetries and Interactions at low energies and the precision frontier (PSI2013), September 2013, Paul Scherrer Institute, Switzerland)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Sub-THz Spectroscopy of the Ground State Hyperfine Splitting of Positronium (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/IRMMW-THz2013_yamazaki.pdf\" target=\"_blank\">Sub-THz Spectroscopy of the Ground State Hyperfine Splitting of Positronium<\/a>, (T. Yamazaki, The International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2013), September 2013, Mainz, Germany)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"New precision measurement of Hyperfine Splitting of Positronium (Poster) (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/ishida_posterposmol2013.pdf\" target=\"_blank\">New precision measurement of Hyperfine Splitting of Positronium (Poster)<\/a>, (A. Ishida, The XVII International Workshop on Low-Energy Positron and Positronium Physics (POSMOL2013), July 2013, Kanazawa)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Direct measurement of the Hyperfine Structure of Ground-State Positronium (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/namba-posmol2013.pdf\" target=\"_blank\">Direct measurement of the Hyperfine Structure of Ground-State Positronium<\/a>, (T. Namba, The XVII International Workshop on Low-Energy Positron and Positronium Physics (POSMOL2013), July 2013, Kanazawa)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"The direct spectroscopy of positronium hyperfine structure using a sub-THz gyrotron (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1007\/s10762-013-0001-8\" target=\"_blank\">The direct spectroscopy of positronium hyperfine structure using a sub-THz gyrotron<\/a>, (A. Miyazaki et al., Journal of Infrared, Millimeter, and Terahertz Waves, 35(2014)91-100.)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Sub-THz Spectroscopy of the Ground State Hyperfine Splitting of Positronium (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/fukui-sympo2013_yamazaki.pdf\" target=\"_blank\">Sub-THz Spectroscopy of the Ground State Hyperfine Splitting of Positronium<\/a>, (T. Yamazaki, International Symposium on Development of Terahertz Gyrotrons and Applications, March 2013, Fukui University)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Precise measurement of positronium (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1093\/ptep\/pts062\" target=\"_blank\">Precise measurement of positronium<\/a>, (T. Namba, Prog. Theor. Exp. Phys. (2012) 04D003)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Direct measurement of the Hyperfine Structure of the Ground state Positronium using High Power sub-THz radiation (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/yamazaki-irmmw-2012.pdf\" target=\"_blank\">Direct measurement of the Hyperfine Structure of the Ground state Positronium using High Power sub-THz radiation<\/a> (<a rel=\"noreferrer noopener\" aria-label=\"Proceedings (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1109\/IRMMW-THz.2012.6380416\" target=\"_blank\">Proceedings<\/a>), (T. Yamazaki, The 37th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Sept. 2012, Wollongong Univ., Australia)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"The sub-THz direct spectroscopy of positronium hyperfine splitting (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/miyazaki-icpa16.pdf\" target=\"_blank\">The sub-THz direct spectroscopy of positronium hyperfine splitting<\/a>, (<a rel=\"noreferrer noopener\" aria-label=\"Proceedings (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/miyazaki-icpa16-proc.pdf\" target=\"_blank\">Proceedings<\/a>), (A. Miyazaki, 16th International Conference on Positron Annihilation (ICPA-16), Aug. 2012, Bristol Univ., UK)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\" (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1103\/PhysRevLett.108.253401\" target=\"_blank\">Direct Observation of the Hyperfine Transition of the Ground State Positronium<\/a>, (T. Yamazaki et al., Phys. Rev. Lett. 108, 253401(2012), <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1204.1129 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1204.1129\" target=\"_blank\">arXiv: 1204.1129<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Direct Measurement of the Hyperfine Structure of the Ground State Positronium using High Power Sub-THz Radiation (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/IW-FIRT2012-yamazaki.pdf\" target=\"_blank\">Direct Measurement of the Hyperfine Structure of the Ground State Positronium using High Power Sub-THz Radiation<\/a> (<a rel=\"noreferrer noopener\" aria-label=\"Proceedings (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/IW-FIRT2012-proc-yamazaki.pdf\" target=\"_blank\">Proceedings<\/a>), (T. Yamazaki, The 4th International Workshop on Far-Infrared Technologies 2012 (FIRT2012), Mar. 2012, Fukui)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Direct Measurement of the Hyperfine Transition of Positronium using High Power Sub-THz Radiation (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/yamazaki_dron.pdf\" target=\"_blank\">Direct Measurement of the Hyperfine Transition of Positronium using High Power Sub-THz Radiation<\/a>, (T. Yamazaki, Doctor thesis, FY\u201911)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"The First Observation of Direct Transition between o-Ps and p-Ps by sub-THz Radiation (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/pbar2011-suehara.pdf\" target=\"_blank\">The First Observation of Direct Transition between o-Ps and p-Ps by sub-THz Radiation<\/a>, (T. Suehara, Cold Antimatter and High Precision Physics 2011 (Pbar11), November \u201911, Matsue)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Precision measurement of positronium hyperfine splitting using the Zeeman effect (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/pbar2011-ishida.pdf\" target=\"_blank\">Precision measurement of positronium hyperfine splitting using the Zeeman effect<\/a>, (A. Ishida, Cold Antimatter and High Precision Physics (Pbar11), November \u201911, Matsue)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Precise measurement of positronium hyperfine splitting using the Zeeman effect (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/fpua2011-ishida.pdf\" target=\"_blank\">Precise measurement of positronium hyperfine splitting using the Zeeman effect<\/a>, (A. Ishida, Fundamental Physics Using Atoms 2011 (FPUA2011), October \u201911, Okayama)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Direct Measurement of Positronium Hyperfine Splitting (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/IRMMW2011-miyazaki.pdf\" target=\"_blank\">Direct Measurement of Positronium Hyperfine Splitting<\/a>, (A. Miyazaki, 36th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz2011), October \u201911, Houston USA)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Precise measurement of positronium hyperfine splitting using the Zeeman effect (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/ishida_leap2011.pdf\" target=\"_blank\">Precise measurement of positronium hyperfine splitting using the Zeeman effect<\/a> (Proceedings <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1105.4392 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1105.4392\" target=\"_blank\">arXiv: 1105.4392<\/a>), (A. Ishida, 10th International Conference on Low Energy Antiproton Physics (LEAP2011), April \u201911, TRIUMF Canada)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"First Direct Measurement of Hyperfine Splitting of Positronium using sub-THz light (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/yamazaki-leap2011.pdf\" target=\"_blank\">First Direct Measurement of Hyperfine Splitting of Positronium using sub-THz light<\/a> (Proceedings <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1105.4352 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1105.4352\" target=\"_blank\">arXiv: 1105.4352<\/a>), (T. Yamazaki, 10th International Conference on Low Energy Antiproton Physics (LEAP2011), April \u201911, TRIUMF Canada)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Positoronium Hyperfine Splitting (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1011.6457\" target=\"_blank\">Positoronium Hyperfine Splitting<\/a>, (A. Miyazaki, International School of Subnuclear Physics 2010, August \u201910, Erice Italy, arXiv: 1011.6457)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Precise Measurement of Hyperfine Splitting of Positronium using Zeeman Effec (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/Ishida_PSPA10_presentation_pub.pdf\" target=\"_blank\">Precise Measurement of Hyperfine Splitting of Positronium using Zeeman Effec<\/a>t, (A. Ishida, 39th Polish Seminar on Positron Annihilation (PSPA10), June \u201910, Kazimerz Dolny, Poland)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"New Experiment for the First Direct Measurement of Positronium Hyperfine Splitting with sub-THz light (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/miyazaki-polish-2010.pdf\" target=\"_blank\">New Experiment for the First Direct Measurement of Positronium Hyperfine Splitting with sub-THz light<\/a>, (A. Miyazaki, 39th Polish Seminar on Positron Annihilation (PSPA10), June \u201910, Kazimerz Dolny, Poland)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Application of Gyrotron: Precision measurement of Positronium HFS (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/fukui100315asai.pdf\" target=\"_blank\">Application of Gyrotron: Precision measurement of Positronium HFS<\/a> (Proceedings <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1003.4324 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1003.4324\" target=\"_blank\">arXiv: 1003.4324<\/a>), (S. Asai, The 3rd International Workshop on Far-Infrared Technologies 2010 (IW-FIRT2010, Mar. \u201910)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Detection of the Direct Hyperfine Transition of Positronium Atoms using sub-THz High-Power Radiation (Poster) (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/firt2010-poster-suehara.pdf\" target=\"_blank\">Detection of the Direct Hyperfine Transition of Positronium Atoms using sub-THz High-Power Radiation (Poster)<\/a> (Proceedings <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1007.0843 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1007.0843\" target=\"_blank\">arXiv: 1007.0843<\/a>), (T. Suehara, The 3rd International Workshop on Far-Infrared Technologies 2010 (IW-FIRT2010, Mar. \u201910)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Measurement of Positronium hyperfine splitting with quantum oscillation, (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1016\/j.physletb.2011.01.052\" target=\"_blank\">Measurement of Positronium hyperfine splitting with quantum oscillation,<\/a> (Y. Sasaki, A. Miyazaki, A. Ishida, T. Namba, S. Asai, T. Kobayashi, H. Saito, K. Tanaka, and A. Yamamoto, Phys. Lett. B 28(2011)121-126, <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1002.4567 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1002.4567\" target=\"_blank\">arXiv: 1002.4567<\/a>)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Precise Measurement of HFS of Positronium using Zeeman Effect (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/asr2009-ishida.pdf\" target=\"_blank\">Precise Measurement of HFS of Positronium using Zeeman Effect<\/a>, (A. Ishida, Advanced Science Research Symposium 2009, Nov. \u201909)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Experiment for the First Direct Measurement of the Hyperfine Splitting of Positronium (Poster) (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/asr2009-miyazaki.pdf\" target=\"_blank\">Experiment for the First Direct Measurement of the Hyperfine Splitting of Positronium (Poster)<\/a>, (A. Miyazaki, Advanced Science Research Symposium 2009, Nov. \u201909)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Precise measurement of hyperfine structure of positronium using Zeeman effect -experimental set up and RF system (Poster) (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/asr2009-akimoto.pdf\" target=\"_blank\">Precise measurement of hyperfine structure of positronium using Zeeman effect -experimental set up and RF system (Poster)<\/a>, (G. Akimoto, Advanced Science Research Symposium 2009, Nov. \u201909)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Measurement of HFS of positronium using quantum oscillation (Poster) (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/asr2009-sasaki.pdf\" target=\"_blank\">Measurement of HFS of positronium using quantum oscillation (Poster)<\/a>, (Y. Sasaki, Advanced Science Research Symposium 2009, Nov. \u201909)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Precise measurement of HFS of positronium (Poster) (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/posmol2009_ishida_poster.pdf\" target=\"_blank\">Precise measurement of HFS of positronium (Poster)<\/a> (Proceedings <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 0912.4370 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/0912.4370\" target=\"_blank\">arXiv: 0912.4370<\/a>), (A. Ishida, The Workshop on Low Energy Positron and Positronium Physics (POSMOL2009), Aug. \u201909)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Probing the Energy Structure of Positronium with a 203 GHz Fabry-Perot Cavity (Poster) (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/posmol2009-suehara.pdf\" target=\"_blank\">Probing the Energy Structure of Positronium with a 203 GHz Fabry-P\u00e9rot Cavity (Poster)<\/a> (Proceedings <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 1007.0834 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/1007.0834\" target=\"_blank\">arXiv: 1007.0834<\/a>), (T. Suehara, The Workshop on Low Energy Positron and Positronium Physics (POSMOL2009), Aug. \u201909)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Precise measurement of HFS of positronium (Poster) (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/icpeac2009_ishida_poster.pdf\" target=\"_blank\">Precise measurement of HFS of positronium (Poster)<\/a>, (A. Ishida, XXVI International Conference on Photonic, Electronic, and Atomic Collisions (ICPEAC2009), Aug. \u201909)<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"The First Direct Measurement of the Hyperfine Splitting of Positronium (Poster) (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/icpeac2009-suehara.pdf\" target=\"_blank\">The First Direct Measurement of the Hyperfine Splitting of Positronium (Poster)<\/a>, (T. Suehara, XXVI International Conference on Photonic, Electronic, and Atomic Collisions (ICPEAC2009), Aug. \u201909<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Positronium assembly system for the precise measurement of the Positronium hyper-fine splitting (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/21aSM08-hashimoto.pdf\" target=\"_blank\">Positronium assembly system for the precise measurement of the Positronium hyper-fine splitting<\/a>, (M. M. Hashimoto, JPS autumn meeting, Sept. \u201808)<\/li>\n\n\n\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/Ps_asai_1.pdf\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Precise measurement of the positronium decay rate and energy level (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\">Precise measurement of the positronium decay rate and energy level<\/a>, (S. Asai, pbar08, Feb. \u201808)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Ps_gamma-X\">Search for weakly coupling neutral particles with ortho-positronium<\/h3>\n\n\n\n<p>A search for the exotic decay mode (gamma + X<sup>0<\/sup>) of the ortho-positronium. X<sup>0<\/sup> is a weakly coupling neutral particles like the axion, dilation, unparticle, , etc. We are now designing a detector.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Ps_CPV\">Search for CP violation with ortho-positronium<\/h3>\n\n\n\n<p>A search for CP violation in the lepton sector by measuring the angular  correlation of ortho-positronium spin and its decay gamma rays was done.  No CP violation was found, and we obtained the most stringent limit.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a rel=\"noreferrer noopener\" aria-label=\"Search for CP-violation in Positronium Decay, (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1103\/PhysRevLett.104.083401\" target=\"_blank\">Search for CP-violation in Positronium Decay,<\/a> (T. Yamazaki, T. Namba, S. Asai, and T. Kobayashi, <a rel=\"noreferrer noopener\" aria-label=\"arXiv:0912.0843 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/0912.0843\" target=\"_blank\">arXiv:0912.0843<\/a>, Phys. Rev. Lett. 104, 083401 (2010), <a rel=\"noreferrer noopener\" aria-label=\"Erratum (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1103\/PhysRevLett.120.239902\" target=\"_blank\">Erratum<\/a>, (a factor 1\/2 is missing in Eq. 2))<\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" aria-label=\"Tests of CP and CPT symmetry with positronium (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/pbar08-namba.pdf\" target=\"_blank\">Tests of CP and CPT symmetry with positronium<\/a>, (T. Namba, pbar08, Feb. \u201808)<\/li>\n\n\n\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/hawaii_ver3.ppt\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Search for CP violation in the lepton sector (Poster) (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\">Search for CP violation in the lepton sector (Poster)<\/a>, (K. Nishihara, JPS APS Joint meeting, Nov. \u201806)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Ps_invisible\">Search for the invisible decay of ortho-positronium<\/h3>\n\n\n\n<p>Search for the exotic decay of the positronium, in particular for decay  to very weakly interacting particles. This search has sensitivity for  TeV scale extra dimensions, paraphotons, milli-charged particles, and so  on.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/jps2006Hawaii.pdf\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Search for invisible decay of ortho-positronium (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\">Search for invisible decay of ortho-positronium<\/a>, &nbsp; (T. Namba, JPS APS joint meeting, Nov. \u201806)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"oPs_lifetime\">Lifetime measurement of ortho-positronium<\/h3>\n\n\n\n<p>Test of bound state QED by measuring the lifetime of ortho-positronium.  The highest precision to date for this measurement was obtained (150ppm)  which confirmed the \u03b1<sup>2<\/sup> correction term.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a rel=\"noreferrer noopener\" aria-label=\"First test of O(\u03b1^2) correction of the orthopositronium decay rate (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1016\/j.physletb.2008.12.008\" target=\"_blank\">First test of O(\u03b1<sup>2<\/sup>) correction of the orthopositronium decay rate<\/a>, &nbsp;(Y. Kataoka, S. Asai, and T. Kobayashi, Phys. Lett. B 671(2009)219, <a rel=\"noreferrer noopener\" aria-label=\"arXiv: 0809.1594 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/arxiv.org\/abs\/0809.1594\" target=\"_blank\">arXiv: 0809.1594<\/a>)<\/li>\n\n\n\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/main.final_.pdf\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"TEST OF BOUND STATE QED HIGHER ORDER CORRECTION: PRECISION MEASUREMENT OF ORTHOPOSITRONIUM DECAY RATE (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\">TEST OF BOUND STATE QED HIGHER ORDER CORRECTION: PRECISION MEASUREMENT OF ORTHOPOSITRONIUM DECAY RATE<\/a>,  (Y. Kataoka, Doctor thesis, FY\u201907)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Fe57_solaraxion\">Search for solar axions with Fe-57 resonant absorption<\/h3>\n\n\n\n<p>Experimental search for an undiscovered particle, the axion, coming from  the sun. For the detection of the axion, the resonant absorption of <sup>57<\/sup>Fe nuclei is used. Unfortunately the axion was not discovered but the  strongest experimental limit to date of experiments searching via axion  nuclei coupling was obtained, m &lt; 216 eV.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a rel=\"noreferrer noopener\" aria-label=\"Results of a search for monochromatic solar axions using 57Fe (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\" href=\"https:\/\/doi.org\/10.1016\/j.physletb.2007.01.005\" target=\"_blank\">Results of a search for monochromatic solar axions using <sup>57<\/sup>Fe<\/a>, (T. Namba, Phys. Lett. B 645(2007)398)<\/li>\n\n\n\n<li><a href=\"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/wp-content\/uploads\/2019\/09\/dm2006.pdf\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Search for a monochromatic component of solar axions using Fe-57 (\u65b0\u3057\u3044\u30bf\u30d6\u3067\u958b\u304f)\">Search for a monochromatic component of solar axions using Fe-57<\/a>, (T. Namba, Dark Matter 2006)<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-right\">Contact: T. Namba (<em>naniwa@icepp.s.u-tokyo.ac.jp<\/em>)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>(To Japanese page) Research Our group (ICEPP + Asai lab.) searches for new physics beyond the standard model w [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-365","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/index.php?rest_route=\/wp\/v2\/pages\/365","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=365"}],"version-history":[{"count":87,"href":"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/index.php?rest_route=\/wp\/v2\/pages\/365\/revisions"}],"predecessor-version":[{"id":1351,"href":"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/index.php?rest_route=\/wp\/v2\/pages\/365\/revisions\/1351"}],"wp:attachment":[{"href":"https:\/\/tabletop.icepp.s.u-tokyo.ac.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=365"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}