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Abstract:
In the Standard Model of particle physics, the Higgs field plays a crucial role by spontaneously breaking the underlying electroweak symmetry. This process gives rise to a massive Higgs boson and three massless Goldstone bosons. The massless Goldstone bosons are then absorbed into the W and Z bosons, transforming them into their longitudinal components and giving them mass. It is thus interesting to study longitudinal polarizations of W and Z bosons. In this presentation, I will review recent ATLAS studies with boson polarization, highlighting new measurements of diboson polarization fractions in inclusive diboson production and VBS, as well as a measurement of polarization entanglement in H->ZZ events.
Biography:
Junjie Zhu is a Professor of Physics at the University of Michigan and elected as APS Fellow. He obtained his bachelor's degree from University of Science and Technology of China in 2000 and his PhD degree from University of Maryland in 2004. He was a postdoctoral fellow at Stony Brook before joining the University of Michigan in 2010. He is a member of the ATLAS Collaboration, where his work focuses on electroweak physics and on detector and electronics development for the ATLAS muon spectrometer.
Host: Prof. Haijun Yang
Alternative online link：https://meeting.tencent.com/dm/oRvYvgDoBi9q
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