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arXiv · 1211.5411

QCD parity violation at LHC in warped extra dimension

Naoyuki Haba·Kunio Kaneta·Soshi Tsuno
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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.

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Naoyuki Haba, Kunio Kaneta, Soshi Tsuno. 2012-12-05. QCD parity violation at LHC in warped extra dimension. https://doi.org/10.1103/physrevd.87.095002

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