Latest diboson polarization results from ATLAS - Junjie Zhu (Michigan)

Tuesday 14 May 2024, 12:30 → 13:30 America/Los_Angeles

48/2-224 - Madrone (SLAC)

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 discuss the latest diboson polarization studies conducted at ATLAS with WZ and ZZ diboson events, and I will focus on new results on diboson polarization fraction measurements at high energies as well as the first observation of radiation amplitude zero effects using WZ events.
 

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