Description |
124 p. : ill. |
Note |
Advisor: Paul E. Karchin |
Thesis |
Thesis (Ph.D.)--Wayne State University, 2012. |
Summary |
The standard model (SM) fails to explain the variety of observed quark and lepton flavors and their masses suggesting that there might exist a more fundamental basis. If quarks and leptons are composite particles made up of more basic constituents, a new physics interaction in the form of a four-fermion contact interaction arises between them. Experimentally the signal is manifest as a deviation from the SM prediction in the high-mass tail for the invariant mass distribution of the opposite-sign dimuon pairs. The Large Hadron Collider (LHC) experiment at the Center for European Nuclear Research (CERN) is built to explore new physics possibilities from proton-proton collisions occurring at the world's highest center-of-mass energy. This thesis discusses in detail a search strategy for a new physics possibility based on a left-handed current model of contact interactions. Based on 5.3 inverse femtobarns of 2011 LHC data as collected by the Compact Muon Solenoid (CMS) detector, exclusion lower limits at 95% confidence level are set on the compositeness energy scale for both destructive and constructive interferences of the new physics with the SM Drell-Yan process. These limits form the most stringent limits to date and exceed the current published limits significantly. |
Subject |
Physics
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Added Title |
Wayne State University thesis (Ph.D.) : Physics.
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OCLC # |
815524850 |
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