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Abstract:
The nature of the Higgs boson and dark matter represents profound questions in fundamental physics. In this talk, I'll summarize the work that utilizes the Higgs boson as a tool to probe dark matter on LHC. This is based on comprehensive signatures from LHC collision data collected by the ATLAS detector. The research includes the most stringent global measurements of Higgs interaction properties and explorations of how the Higgs boson can act as a 'portal' to facilitate interactions between dark matter and standard model particles. I'll explain the challenges encountered, the endeavors in applying novel analysis techniques and enhancing detector calibrations, and consequential findings from these important projects.
Biography:
Dr. Zirui Wang. obtained his B.S. (2014) and PhD (2019) in Physics from Shanghai Jiao Tong University. Currently he's a postdoctoral researcher at the University of Michigan, Ann Arbor. His research interest has focused on Higgs boson property measurements and dark matter searches, particularly utilizing comprehensive LHC signatures with novel analysis techniques, to improve the Higgs boson measurement precision and probe BSM dark matter scenarios on colliders. Dr. Wang has led several key analyses in the ATLAS collaboration, including the one delivering the most precise Higgs boson interaction measurement to date. Currently, he's the co-convener of the ATLAS Dark Matter physics analysis group and has been elected as the convener of the LHC Dark Matter Working Group (coming into effect from Oct. 2024). His wider contributions include significant roles in the ATLAS muon system operations, calibrations and upgrades.
Video link (internal only): https://vshare.sjtu.edu.cn/play/c1c0722a-45c7-41d2-ac49-48d1be14ce8d