BelleII excess & Muon g-2 illuminating Light DM with Higgs Portal

12 Dec 2024, 14:00
30m
102 (Ainsworth Building)

102

Ainsworth Building

Contributed Talk Standard Model and Beyond

Speaker

Dr Jongkuk Kim (Chung-Ang University)

Description

The Belle II collaboration recently announced that they observed the B→ Kνν decay process for the first time. However, their result encounters a 2.7σ deviation from the Standard Model calculation. Additionally, Fermilab released new data on muon g − 2 away from the SM expectation with 5.1σ. In this talk, I would like to talk about the simplest UV-complete U(1)Lµ−Lτ-charged complex scalar Dark Matter model. Thanks to the existence of light dark Higgs boson and light dark photon, I can explain the observed relic density of DM and resolve the results reported by both Belle II and Fermilab experiments simultaneously. As a byproduct, the Hubble tension can be alleviated.

Authors

Mr Shu-Yu Ho (Tohoku University) Dr Jongkuk Kim (Chung-Ang University) Prof. Pyungwon Ko (KIAS (Korea Institute for Advanced Study))

Presentation materials