Dimension-six anomalous $tq\gamma$ couplings in $\gamma \gamma$ collision at the LHC

Abstract

We have investigated the flavor changing top quark physics on the dimension-six anomalous $tq\gamma$ ($q=u,c$) couplings through the process $pp\to p\gamma \gamma p\to pt\bar{q}p$ at the LHC by considering different forward detector acceptances. In this paper, we have taken into account and examine the effects of top quark decay. The sensitivity bounds on the anomalous couplings and, $t\to q\gamma$ branching ratio have been obtained at the $95\%$ confidence level for the effective lagrangian approach. Besides, we have investigated the effect of the anomalous couplings on single top quark spin asymmetry.

24 pages, 8 figures. This version matches the published version in Nucl.Phys.B

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Cited by in corpus (7)

• Photon initiated single top quark production via flavor-changing neutral currents at the LHC
• Top quark anomalous FCNC production via $tqg$ couplings at FCC-hh
• Central exclusive production of $W$ boson pairs in $pp$ collisions at the LHC in hadronic and semi-leptonic final states
• Searching for anomalous top quark interactions with proton tagging and timing detectors at the LHC
• Probing the anomalous tqgamma couplings in photon-proton collisions
• Anomalous light-by-light scattering at the LHC: recent developments and future perspectives
• Investigation of the FCNC couplings between the top quark and the photon in $\gamma \gamma$ and ${\gamma }^{\ast }{\gamma }^{\ast }$ collisions at the CLIC