Light axigluon and single top production at the LHC

The light axigluon model can explain the Tevatron tt̄ forward-backward asymmetry and at the same time satisfy the constraints from the electroweak precision measurement and the ATLAS and CMS data, which induces the flavor changing (FC) couplings of axigluon with the SM and new quarks. We investigate the effects of these FC couplings on the s- and t-channel single top productions at the LHC and the F C decays Z → b̄s+bs̄ , t → cγ and cg. Our numerical results show that the light axigluon can give significantly contributions to single top production and the rare top decays t → cγ and cg.