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EPE Seminar: Yulei Zhang REMOTE VIA ZOOM
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US/Pacific
PAT C-421 (UW Seattle)
PAT C-421
UW Seattle
Description
Title: Exploring the Higgs Self-Coupling and Looking for New Physics
Abstract: This talk presents the analysis of non-resonant Higgs boson pair (HH) probing the Higgs self-coupling, using data from the ATLAS detector at the LHC with an integrated luminosity of 140 fb^(−1). It encompasses the initial results from the HH → multilepton decay channels, including both bosonic and tauonic final states, and the latest legacy analysis of 𝐻𝐻→𝑏𝑏 ̅𝜏𝜏. While no evidence of HH production is observed, a 95% CL upper limit is set on the signal strength. The talk will also highlight the combined analysis of HH with single-Higgs boson production, and the most stringent 2𝜎 constraints are determined for the HHH coupling modifier, 𝜅_𝜆. This talk further explore an extension of Higgs physics through a preliminary study on Higgs decay to long-lived particles (LLPs) in a lepton collider using advanced machine learning techniques.
Bio: Yulei Zhang, is a joint Ph.D. student between Shanghai Jiao Tong University and Université Paris Cité, supervised by Prof. Liang Li and Dr. Gregorio Bernardi, majored in experimental particle physics. His research primarily focuses on constraining the Higgs self-coupling and probing for new physics phenomena, including long-lived particles and dark photon search. He is currently engaged in research within the ATLAS Collaboration, concentrating on di-Higgs searches, with a leading role as the note editor of the multilepton channel. Yulei Zhang has been honored with the Outstanding Graduate Student First Grade award, Outstanding Graduate, and is a recipient of the Shanghai Municipal Government Scholarship.
Recording: "C:\Users\lubat\Downloads\GMT20240228-003405_Recording_1920x1118 (1).mp4"
