Alexandria Digital Research Library

A search for new physics in events with oppositely charged dileptons, jets, and missing transverse energy in proton-proton collisions at 7 TeV center of mass energy

Author:
Barge, Derek Michael
Degree Grantor:
University of California, Santa Barbara. Geography
Degree Supervisor:
Claudio Campagnari
Place of Publication:
[Santa Barbara, Calif.]
Publisher:
University of California, Santa Barbara
Creation Date:
2014
Issued Date:
2014
Topics:
Physics, Elementary Particles and High Energy
Keywords:
Missing Energy
LHC
CMS
Supersymmetry
Dilepton
CERN
Genres:
Dissertations, Academic and Online resources
Dissertation:
Ph.D.--University of California, Santa Barbara, 2014
Description:

A search is presented for physics beyond the standard model (BSM) in final states with a pair of opposite-sign isolated leptons accompanied by jets and missing transverse energy. The search uses LHC data recorded at a center-of-mass energy of 7 TeV with the CMS detector, corresponding to an integrated luminosity of approximately 5 inverse femto-barns. The search strategy probes models of dilepton production with heavy, colored objects that decay to final states including invisible particles, leading to very large hadronic activity and missing transverse energy. No evidence for an event yield in excess of the standard model expectations is found. Upper limits on the BSM contributions to the signal regions are deduced from the results, which are used to exclude a region of the parameter space of the constrained minimal supersymmetric extension of the standard model. Additional information related to detector efficiencies and response is provided to allow testing specific models of BSM physics not explicitly considered.

Physical Description:
1 online resource (213 pages)
Format:
Text
Collection(s):
UCSB electronic theses and dissertations
ARK:
ark:/48907/f30863fw
ISBN:
9781321349139
Catalog System Number:
990045116690203776
Rights:
Inc.icon only.dark In Copyright
Copyright Holder:
Derek Barge
File Description
Access: Public access
Barge_ucsb_0035D_12261.pdf pdf (Portable Document Format)