One-side forward-backward asymmetry at the LHC

Abstract

Forward-backward asymmetry $A_{\mathrm{FB}}$ is an essential observable to study the nature of coupling in the standard model and physics beyond the standard model, as shown at LEP and Tevatron. As a proton-proton collider, the LHC does not have the preferred direction contrary to her counterpart, namely, LEP and Tevatron. Therefore $A_{\mathrm{FB}}$ is not applicable at the LHC. However for the proton the momentum of valence quark is usually larger than that of the sea quark. Utilizing this feature we have defined a so-called one-side forward-backward asymmetry $A_{\mathrm{OFB}}$ for the top quark pair production at LHC in the previous work. In this paper we extend our studies to the charged leptons and bottom quarks as the final states. Our numerical results show that at the LHC $A_{\mathrm{OFB}}$ can be utilized to study the nature of the couplings once enough events are collected.

19 pages, 7 figures, 1 table, published version

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Cited by in corpus (4)

• Top quark asymmetry from a non-Abelian horizontal symmetry
• Top quark forward-backward asymmetry at Tevatron and its implications at the LHC
• New Color-Octet Vector Boson Revisit
• Bottom Pair Production and Search for Heavy Resonances