Search for dark matter in association with a hardronic top and bottom quark and characterization of the CMS HGCAL silicon sensor

dc.contributor.committeeChairAkchurin, Nural
dc.contributor.committeeMemberKunori, Shuichi
dc.contributor.committeeMemberLee, Sungwon
dc.contributor.committeeMemberBernuss, Ayrton
dc.creatorMengke, Tielige
dc.date.accessioned2022-01-11T20:20:30Z
dc.date.available2022-01-11T20:20:30Z
dc.date.created2021-12
dc.date.issued2021-12
dc.date.submittedDecember 2021
dc.date.updated2022-01-11T20:20:31Z
dc.description.abstractA search for dark matter using events containing a hadronically decaying top quark, one b jet arising from initial-state gluon-splitting, no leptons, and a large imbalance in transverse momentum is presented. The data being used were collected from proton-proton collisions at a center-of-mass energy of 13 TeV with the CMS detector at the LHC and corresponding to an integrated luminosity of 137 /fb. The results are interpreted based on a simplified dark matter model that provides explanation for observed proximity of the dark matter and baryon abundances. As part of the High Luminosity LHC (HL-LHC) project, the high-granularity calorimeter (HGCAL) will be a major upgrade of the CMS experiment to replace the current endcap calorimeter. Due to the higher instantaneous luminosity of the HL-LHC and the rapidity range the HGCAL will cover, radiation tolerance is a primary design consideration. The silicon sensor has been chosen due to its intrinsic radiation hardness. Results from an irradiation campaign of 8-inch silicon sensors are presented.
dc.description.abstractEmbargo status: Restricted to TTU community only. To view, login with your eRaider (top right). Others may request the author grant access exception by clicking on the PDF link to the left.
dc.format.mimetypeapplication/pdf
dc.identifier.urihttps://hdl.handle.net/2346/88680
dc.language.isoeng
dc.rights.availabilityRestricted to TTU community only.
dc.subjectParticle Physics
dc.subjectDark Matter
dc.subjectSilicon Detector
dc.titleSearch for dark matter in association with a hardronic top and bottom quark and characterization of the CMS HGCAL silicon sensor
dc.typeThesis
dc.type.materialtext
thesis.degree.departmentPhysics
thesis.degree.disciplinePhysics
thesis.degree.grantorTexas Tech University
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy

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