Uniform TitleProbing mSUGRA with a search for chargino-neutralino production using trileptons
NameGlatzer, Julian (author), Somalwar, Sunil (chair), Thomas, Scott (co-chair), Lath, Amitabh (internal member), Rutgers University, Graduate School - New Brunswick,
SubjectPhysics and Astronomy,
Leptons (Nuclear physics)
DescriptionThis thesis describes the CDF II 2fb-1 search for supersymmetric chargino-neutralino production in sqrt(s)=1.96 TeV p-pbar collisions using the "golden" channel with three leptons and missing transverse energy in the final state and the application of the results to obtain a limit on the parameter space of the supersymmetric model mSUGRA.
Electrons and muons are reconstructed directly; isolated tracks are used as a proxy for tau leptons. Several analysis channels with different signal purity are defined and evaluated independently. Based on 7 observed and 6.4 expected background events this analysis was able set the first direct limits on chargino-neutralino production in mSUGRA since LEP. Based on mSUGRA phenomenology the sensitivity of this analysis is investigated; the mSUGRA parameter space is split into different phenomenology classes.
Experimental results from previous searches in this channel by CDF and D0 have been presented for specific parameter values of a given model. A more model-independent approach is proposed and, by splitting the results of this analysis into channels based on tau content, the results of the analysis are generalized.
NoteIncludes bibliographical references (p. 117-121).
CollectionGraduate School - New Brunswick Electronic Theses and Dissertations
Organization NameRutgers, The State University of New Jersey
RightsThe author owns the copyright to this work.