The 4th Topics of Particle, Astro and Cosmo Frontiers (TOPAC 2026) 第4届粒子物理、天体物理和宇宙学前沿国际学术研讨会

Session

Astroparticle Highlight: Low-Energy Probes (Room 567, Chair Yong-Chao Zhang)

17 Apr 2026, 17:40

79. Radiative corrections to inverse beta decay and neutron decay at low energies

Sasha Tomalak (Institute of Theoretical Physics, Chinese Academy of Sciences)

17/04/2026, 17:40

We compute electromagnetic radiative corrections in the inverse beta decay at reactor antineutrino energies within the heavy baryon chiral perturbation theory, provide the most accurate cross-section predictions for this process, and present a complete error budget. For the first time, we consistently include quantum electrodynamics, chromodynamics, and electroweak contributions and present...

9. Probing oscillation between visible photon and dark photon by optical time-domain reflectometry

Wenyu Wang (Beijing University of Technology)

17/04/2026, 18:05

Dark photons, which can kinetically mix with ordinary photons, represent
the simplest extension to the standard model. Detecting their
oscillations with visible photons could provide crucial insights into
the nature of dark matter and fundamental interactions beyond the standard model. We propose a novel laboratory-based approach to detect dark photon oscillations using a laser in an...

147. Multi-messenger probes of ultralight dark matter

Bohua Li (Guangxi University)

17/04/2026, 18:30