One-side forward-backward asymmetry at the LHC

Details One-side forward-backward asymmetry at the LHC One-side forward-backward asymmetry at the LHC

2010-11-05

arxiv.org/abs/1011.1428v2

Phys.Rev.D83:015002,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 7 figures, 1 table, published version

Scientific paper

10.1103/PhysRevD.83.015002

Forward-backward asymmetry $A_{\rm FB}$ 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 $A_{\rm FB}$ 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 $A_{\rm OFB}$ 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 $A_{\rm OFB}$ can be utilized to study the nature of the couplings once enough events are collected.

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