Light axigluon and single top production at the LHC

Abstract

The light axigluon model can explain the Tevatron $t\overline{t}$ 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 $FC$ decays $Z\to \overline{b}s+b\overline{s}$, $t\to c\gamma$ and $cg$. Our numerical results show that the light axigluon can give significantly contributions to single top production and the rare top decays $t\to c\gamma$ and $cg$.

22 pages, 8 figures; references added, contributions of new quarks to rare decay processes added

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Cited by in corpus (3)

• Enhancing $thj$ Production from Top-Higgs FCNC Couplings
• Searches for top-Higgs FCNC couplings via the Whj signal with $h\to \gamma \gamma$ at the LHC
• Top Quark Charge Asymmetry: Searching for Light Axigluons in top pair + jet Production at the LHC