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https://indico.ihep.ac.cn/event/30416
https://zoom.us/j/93117402663?pwd=O5bQmo6DnEsNTljZOJSfGgkL7SfNU4.1
Password: 257786
Abstract:
Thirteen years after the discovery of the Higgs boson, the LHC program has entered a precision era in exploring this remarkable particle and its interactions. Among them, the Higgs–vector-boson coupling offers one of the cleanest and most powerful windows onto physics beyond the Standard Model. Tiny deviations in this interaction could reveal new phenomena, including charge–parity (CP) violation in the Higgs sector. Such CP violation is not only a compelling target for collider measurements, but also an essential ingredient in our broader quest to understand the matter–antimatter asymmetry of the Universe.In this seminar, I will introduce how Effective Field Theory provides a systematic framework for searching for CP-violating Higgs interactions. I will then discuss recent experimental and theoretical developments that have sharpened the precision of Higgs measurements, with a focus on analyses using the full Run-2 proton-proton collision dataset collected by the ATLAS detector at a center-of-mass energy of 13 TeV.
About the speaker：
Jiayi Chen received her Ph.D. in Physics from Brandeis University in the United States and is currently a postdoctoral researcher at Simon Fraser University in Canada. She primarily participates in precision measurements of the Higgs boson in the ATLAS experiment. ATLAS is one of the large-scale high-energy particle physics experiments at the Large Hadron Collider (LHC) at CERN. Her research focuses on the HWW decay channel, Vector Boson Fusion production mechanisms, interpretations using Effective Field Theory, and studies of Higgs CP properties. During her Ph.D. and postdoctoral years, she has been actively involved in ATLAS Higgs physics analyses and has also contributed to the upgrade of the ATLAS Inner Tracker (ITk) silicon microstrip detector for the High-Luminosity LHC (HL-LHC) phase.