QCD parity violation at LHC in warped extra dimension

Abstract

Extra dimension is one of the most attractive candidates beyond the Standard Model. In warped extra dimensional space-time, not only gauge hierarchy problem but also quark-lepton mass hierarchy can be naturally explained. In this setup, a sizable parity violation through Kaluza-Klein gluon exchange appears in QCD process such as helicity dependent top pair production. We investigate this QCD parity violating process by use of $SO(5)\times U(1)$ gauge-Higgs unification model. We evaluate LHC observable quantities, i.e., a charge asymmetry and a forward-backward asymmetry of the top pair production, and find that a sizable charge asymmetry can be observed with specific model parameters.

12 pages, 5 figures

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Cited by in corpus (3)

• LHC signals of the $SO(5)\times U(1)$ gauge-Higgs unification
• Dark matter in the $SO(5)\times U(1)$ gauge-Higgs unification
• Constraints on gauge-Higgs unification models at the LHC