Unit:
Τομέας Πυρηνικής Φυσικής και Φυσικής Στοιχειωδών ΣωματιδίωνLibrary of the School of Science
Dissertation committee:
Παρασκευάς Σφήκας Καθηγητής
Original Title:
Search for supersymmetry in events with a single lepton, jets and missing transverse energy with the CMS detector at LHC
Translated title:
Διερεύνηση ύπαρξης υπερσυμμετρικών σωματιδίων σε συγκρούσεις πρωτονίων σε ενέργειες 7 και 8 TeV
Summary:
This thesis presents searches for supersymmetry in the single-lepton final
state, in proton-proton collisions at center of mass energies of 7 and 8 TeV,
recorded by the CMS experiment at the LHC (CERN). The searches are motivated by
supersymmetric models involving strong-production processes leading to large
cascades of supersymetric particles. The single-lepton signature, accompanied
with multiple jets and missing transverse energy, provides a clean signature in
the hadronic environment of the LHC, while preserves large branching fraction
for most of the supersymmetric models. No statistically significant deviations
from the yields expected by the standard model are observed. Therefore, the
results are interpreted in the context of various supersymmetric models with a
pair production of gluinos, tightening the current limits on the mass of the
gluino and the neutralino.
Keywords:
Supersymmetry, LHC, CMS, Search for physics beyond standard model, Physics object reconstruction
Number of index pages:
1-7
Number of references:
104
