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Miao HU (MIT) “Vector Boson Scattering in the Post-Higgs-Boson-Discovery Era”

December 7, 2021 @ 4:00 pm - 5:00 pm

Abstract:


The observation of a Higgs boson with a mass of about 125 GeV confirmed the nature of the electroweak symmetry breaking (EWSB) predicted by the standard model of particle physics, establishing that the W and Z gauge bosons acquire their mass via the Higgs mechanism. However, the discovered Higgs boson might not be the lone player responsible for EWSB. Further insights into the Higgs and the gauge bosons mutual- and self-couplings can be obtained from measurements of vector boson scattering (VBS) processes.

In this talk, I will present the study of same-sign WW, WZ, and ZZ boson pair productions in association with two jets with data collected by the CMS detector. The effort led to the most precise measurement of the EW same-sign WW cross section to date and the first experimental observation of the EW WZ production. It also formed the basis for the first measurements of the polarized VBS. Interpretations beyond the standard model, including the constraints on the structure of quartic vector boson interactions in the framework of effective field theory, will also be discussed.

http://physics.lbl.gov/rpm/index.php/events/

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Details

Date:
December 7, 2021
Time:
4:00 pm - 5:00 pm
Website:
https://lbnl.zoom.us/j/98462347467?pwd=RjB6dkJPUUpkdnZQd1E5Y0dlcDdaQT09

Venue

Zoom Talk
50A-5132
Berkeley, ca 94720
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