RQC Seminar

293rd RQC Seminar

• Speaker

  Prof. Dr. Eberhard Widmann
  ( Marietta Blau Institute for Particle Physics of the Austrian Academy of Sciences )

• Date

  16:30-17:30, (4:30 p.m.-5:30 p.m.) Monday, July 6, 2026

• Venue

  Onsite( Cooperation Center 4F W426, Wako Campus/ 和光地区 研究交流棟4階 W426 (S41)）

• Title

  Beams of (anti)hydrogen and deuterium for studying fundamental symmetries and interactions

• Inquiries

  atsushi.noguchi[at]riken.jp

Abstract
High precision measurements of the properties of simple atoms can be used to investigate fundamental question of the Standard Model of particle physics. Using in-beam hyperfine spectroscopy of antihydrogen, the matter-antimatter (or CPT) symmetry  can be directly tested and, using hydrogen and deuterium beams, indirectly through the Standard Model Extension, which predicts Lorentz Invariance violation as the source of CPT violation. Gravity as well as hypothetical short-range forces can as well be tested using ultra-slow hydrogen and deuterium beams utilising the phenomenon of quantum reflection from surfaces. I will show recent examples of such measurements performed at AD/ELENA of CERN and Marietta Blau Institute in Vienna.