Center for Theoretical Physics of the Universe (CTPU)

Higgs bosons and b-tagging as tools for new physics searches at the CERN LHC

by Dr. Devdatta Majumder (University of Kansas, CMS Collaboration, CERN)

Thursday, 12 July 2018 from to (Asia/Seoul)
at Theory Building 4th Floor ( CTPU seminar room )
IBS Main Campus, Daejeon
Description
The Large Hadron Collider at CERN has been colliding protons on protons since 2010. The collected data have revealed an enormous amount of exciting physics results, the most celebrated being the discovery of a Higgs boson in July, 2012. In the spirit of the adage "yesterday's discovery is today's calibration and tomorrow's background", in this post-Higgs boson era, we have turned the Higgs boson itself as a tool for new (beyond standard model) physics searches. The Higgs boson is highly unstable and decays most frequently to a b quark-antiquark pair, which give rise to b jets. Thus, Higgs boson identification using b jets is an important tool for discovery. In this talk, I will review novel detection techniques developed in CMS to identify Higgs bosons, particularly those having a large Lorentz boost, which can produce spectacular signatures in the detector, with jets containing the decay products of two collimated b quarks. Further, I will discuss the the progress we have made towards new physics searches in CMS using these detection tools.
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