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SPEAKER: Chen-Hsun (Jay) Chan – University of Wisconsin, Madison – TITLE: Search for Higgs Boson Decaying to Dimuon
November 22, 2022 @ 4:00 pm - 5:00 pm
This is an IN-PERSON Event
Location: Sessler Conference Room – 50A-5132
TITLE: Search for Higgs Boson Decaying to Dimuon
ABSTRACT:
The search for Higgs boson decaying to dimuon is currently the most promising channel to probe the Yukawa coupling to the second-generation fermions. In this seminar, I will give an overview of the recent search for Higgs boson decaying to dimuon, using the proton-proton collision data collected by the ATLAS detector between 2015 and 2018. Despite excellent muon reconstruction, this search is particularly challenging due to the small Higgs to dimuon decay branching ratio and the large amount of Standard Model background. Multiple techniques are developed in order to overcome the challenges and significantly enhance the sensitivity compared to the previous iteration.
With more data to be collected in the near future, it is possible to observe the Higgs to dimuon signal at 5 standard deviation. I will highlight several expected improvements during LHC run-3, which will benefit this measurement. Furthermore, the upgrade to High-Luminosity LHC (HL-LHC) will bring a significant improvement to this measurement, thanks to the increased data statistics as well as the upgrade of the ATLAS Inner Tracker (ITk). I will, in the end, discuss the recent development of the ITk pixel upgrade, particularly the testing of the pixel module serial powering.
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