DOI

10.17077/etd.zlvop4he

Document Type

Thesis

Date of Degree

Summer 2018

Degree Name

MS (Master of Science)

Degree In

Physics

First Advisor

Jane M. Nachtman

First Committee Member

Yasar Onel

Second Committee Member

Robert L. Merlino

Third Committee Member

Kai Yi

Abstract

This thesis uses genetic Tag and probe method to study muon ID efficiency in Compact Muon Solenoid(CMS) Detector. CMS is one of the main detectors in Large Hadron Collider, which is the world’s largest and most powerful particle collider. The main object of the CMS Collaboration is to inverstigate physics underlying elec- troweak symmetry breaking. Moreover, the CMS detector allows experimental par- ticle physicists to perform various experiments which possibly produce new physics signatures beyond the Standard Model (SM). In order to detect and study these sig- natures, it requires the identification and accurate and precise measurement of muon efficiency. To achieve the measurement, a genetic data-driven approach, Tag and Probe method, is used. This method is widely used in CMS community to measure any user defined object efficiency. Typical observable that is used by this method is di-object resonances like Z or J/Psi. In this thesis, Tag and Probe method employs J/Psi resonances to measure muon Soft and Tight ID efficiency, at proton proton collision at √s = 13 GeV .

Pages

vii, 39 pages

Bibliography

Includes bibliographical references (pages 38-39).

Copyright

Copyright © 2018 Runxiong Dong

Included in

Physics Commons

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