Parity Violation in QCD Process

Abstract

Parity violation in QCD process is studied using helicity dependent top quark pair productions at Large Hadron Collider experiment. Though no violation can be found in the standard model (SM), new physics beyond the SM predicts the violation in general. In order to evaluate the violation, we utilize an effective operator analysis in a case that new particles predicted by the new physics are too heavy to be directly detected. By using this method, we try to discriminate supersymmetric SM from universal extra-dimension model via an asymmetry measurement of the top quark pair production. We also discuss the asymmetry from the SM electroweak top pair production process and that from the little Higgs model.

10 pages, 5 figures

References in corpus (9)

• Search for squarks and gluinos using final states with jets and missing transverse momentum with the ATLAS detector in sqrt(s) = 7 TeV proton-proton collisions
• Electroweak effects in top-quark pair production at Hadron Colliders
• Search for squarks and gluinos in events with jets and missing transverse energy using 2.1 fb-1 of ppbar collision data at sqrt(s)=1.96 TeV
• Weak interaction corrections to hadronic top quark pair production
• Weak corrections to gluon-induced top-antitop hadro-production
• Weak interaction corrections to hadronic top quark pair production: contributions from quark-gluon and $b\bar{b}$ induced reactions
• Weak corrections to four-parton processes
• SUSY QCD one-loop effects in (un)polarized top-pair production at hadron colliders
• GR@PPA 2.7 event generator for $pp$/$p\bar{p}$ collisions

Cited by in corpus (2)

• QCD parity violation at LHC in warped extra dimension
• QCD Parity violation in a quarkonium via SUSY