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Special EPE Seminar: Kingman Cheung
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US/Pacific
PAT C-421
PAT C-421
Description
Title: Phenomenology of axion-like particle at the LHC
Abstract: The talk consists of two parts: (i) The recent excess in a rare decay of the Higgs boson, $H\to Z\gamma$, can be interpreted using a light axion-like particle (ALP) in the mass range $0.05 - 0.1$ GeV. The dominant decay of such a light ALP is into a pair of collimated photons, whose decay is required to happen before reaching the ECAL detector, such that it mimics a single photon in the detector.
(ii) The sensitivities on the gauge-boson couplings $g_{aZZ}$, $g_{aZ\gamma}$, and $g_{aWW}$ of an axion-like particle (ALP) are estimated at the LHC with $\sqrt{s}=14$ TeV and integrated luminosities of 300 fb$^{-1}$ (current run) and 3000 fb$^{-1}$ (High-Luminosity LHC). We focus on the associated production processes $pp\to Za \to (l^+l^-)(\gamma\gamma)$ and $pp\to W^\pm a \to (l^\pm \nu)(\gamma\gamma)$.
Bio: Professor Kingman Cheung is a particle physicist at National Tsing Hua University (NTHU) in Taiwan, He earned his Ph.D. from the University of Wisconsin-Madison in 1992 and has since made significant contributions to the fields of Particle Phenomenology, He is internationally renowned for research that bridges abstract theory and experimental observations in high-energy physics, cosmology, and astro-particle physics, especially for developing effective strategies for the discovery of new particles. His expertise and achievements have been acknowledged through numerous awards, including the Fellow of the American Physical Society and the Taiwan Ministry of Education National Chair Professorship.
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