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New Physics Models in the Diphoton Final State at CMS


Wang, Ann Miao (2015) New Physics Models in the Diphoton Final State at CMS. Senior thesis (Major), California Institute of Technology. doi:10.7907/Z9CC0XMN .


Since the discovery of the Higgs boson at the LHC, its use as a probe to search for beyond the standard model physics, such as supersymmetry, has become important, as seen in a recent search by the CMS experiment using razor variables in the diphoton final state. Motivated by this search, this thesis examines the LHC discovery potential of a SUSY scenario involving bottom squark pair production with a Higgs boson in the final state. We design and implement a software-based trigger using the razor variables for the CMS experiment to record events with a bottom quark-antiquark pair from a Higgs boson. We characterize the full range of signatures at the LHC from this Higgs-aware SUSY scenario and demonstrate the sensitivity of the CMS data to this model.

Item Type:Thesis (Senior thesis (Major))
Subject Keywords:Higgs, LHC, CMS, supersymmetry, SUSY, sbottom, squark, diphoton, photons, phenomenology, trigger
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Awards:Barry M. Goldwater Scholarship, 2014
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Spiropulu, Maria (advisor)
  • Duarte, Javier (co-advisor)
  • Pena Herrera, Cristian (co-advisor)
Thesis Committee:
  • Stone, Edward C. (chair)
  • Golwala, Sunil
  • Politzer, Hugh David
  • Frautschi, Steven C.
  • Libbrecht, Kenneth George
  • Refael, Gil
Defense Date:21 May 2015
Record Number:CaltechTHESIS:01152016-102117113
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9535
Deposited By: Javier Duarte
Deposited On:15 Jan 2016 21:44
Last Modified:18 Dec 2020 19:27

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