学术报告（2024年3月14日15:00）： 暗希格斯玻色子在粒子（天体）物理和宇宙学中的角色

主持人：张宏浩 教授

报告摘要：In this talk, the speaker will show that the dark Higgs Boson, which is often ignored in DM phenomenology, can play a crucial role by restoring unitarity and opening new channels for DM pair annihilation. These are demonstrated in several different examples:

(i) the invisible Higgs decay width in vector DM with Higgs portal,

(ii) scalar or fermion inelastic DM and the exothermic DM scattering for the Xenon1T excess,

(iii) collider searches for the s-channel scalar mediators,

(iv) thermal WIMP in U(1)_{L_\mu - L_\tau}} models,  and

(v) Higgs-portal assisted Higgs inflation.

报告人简介：Pyungwon Ko got PhD at University of Chicago in 1991, and worked at University of Minnesota as as postdoctor for 2 and half years before he came back to Korea.

He was faculties at Hong-Ik University, KAIST, and since 2005 he has been a professor or Physics at Korea Institute for Advanced Study (KIAS).

His main research areas are particle physics within and beyond the Standard Model, and recently he is mostly working on dark matter in (astro) particle physics and cosmology.