Study of anomalous top quark FCNC interactions via $tW$-channel of single top

Abstract

The potential of the LHC for investigation of anomalous top quark interactions with gluon ($tug,tcg$) through the production of $tW$-channel of single top quark is studied. In the Standard Model, the single top quarks in the $tW$-channel mode are charge symmetric meaning that $\sigma (pp\to t+W^{-})=\sigma (pp\to \bar{t}+W^{+})$. However, the presence of anomalous FCNC couplings leads to charge asymmetry. In this paper a method is proposed in which this charge asymmetry may be used to constrain anomalous FCNC couplings. The strength of resulting constraints is estimated for the LHC for the center of mass energies of 7 and 14 TeV.

13 pages, 4 figures, new references added

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Cited by in corpus (13)

• Probing the Anomalous FCNC Interactions in Top-Higgs Final State and Charge Ratio Approach
• Direct and Indirect Searches for Top-Higgs FCNC Couplings
• Constraining top quark flavor violation and dipole moments through three and four top quark productions at the LHC
• Single top polarisation as a window to new physics
• Searches for top-Higgs FCNC couplings via the Whj signal with $h\to \gamma \gamma$ at the LHC
• Constraints on top quark flavor changing neutral currents using diphoton events at the LHC
• Probing the Top Quark Flavour-Changing Neutral Current at a Future Electron-Positron Collider
• Limits on the anomalous $Wtq$ couplings
• MEtop - a generator for single top production via FCNC interactions
• Probing the anomalous $tq\gamma$ couplings through single top production at the future lepton-hadron colliders
• Probing FCNC couplings in single top quark production associated with a neutral gauge boson at future lepton colliders
• The anomalous top quark coupling tqg and tW production at the LHC
• Investigation of the FCNC couplings between the top quark and the photon in $\gamma \gamma$ and ${\gamma }^{\ast }{\gamma }^{\ast }$ collisions at the CLIC