Sangam: A Confluence of Knowledge Streams

Commissioning the DIRC Detector and Searching for Axion-like Particles at GlueX

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dc.contributor Williams, Mike
dc.contributor Massachusetts Institute of Technology. Department of Physics
dc.creator Yang, Yunjie
dc.date 2022-05-24T19:19:07Z
dc.date 2022-05-24T19:19:07Z
dc.date 2021-06
dc.date 2022-05-19T23:48:36.641Z
dc.date.accessioned 2023-03-01T07:21:23Z
dc.date.available 2023-03-01T07:21:23Z
dc.identifier https://hdl.handle.net/1721.1/142690
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/275733
dc.description This thesis centers around problems in the study of the strong nuclear force. The GlueX DIRC, a Cherenkov radiation-based detector, was proposed to upgrade the particle identification capability of the GlueX experiment, which aims to perform quantitative tests of Quantum Chromodynamics in the nonperturbative regime by searching for and studying hybrid mesons. This thesis describes the construction, commissioning, reconstruction, and calibration of the GlueX DIRC detector. Originally proposed to solve the strong CP problem, axions and axion-like particles are hypothetical pseudoscalar particles found in many proposed extensions to the Standard Model of particle physics. This thesis presents a search for photoproduction of axion-like particles using data in photon-proton interactions collected by the GlueX experiment at Jefferson Laboratory in the 𝛾𝛾 and 𝜋 +𝜋 −𝜋 0 final states of the axion-like particles. In addition, the Monte Carlo modeling of the strong interaction at low energies leads to challenges known as the event generator tuning problem. This thesis presents a novel approach to the Monte Carlo event generator tuning problem using Bayesian optimization.
dc.description Ph.D.
dc.format application/pdf
dc.publisher Massachusetts Institute of Technology
dc.rights In Copyright - Educational Use Permitted
dc.rights Copyright MIT
dc.rights http://rightsstatements.org/page/InC-EDU/1.0/
dc.title Commissioning the DIRC Detector and Searching for Axion-like Particles at GlueX
dc.type Thesis


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