Top Quark Anomalous Electromagnetic Couplings in Photon-Photon Scattering at the LHC

Abstract

The capability of the LHC to study the electromagnetic dipole moments of the top quark is discussed. In particular, the process $pp\to p\gamma \gamma p\to pt\bar{t}p$, which is supposed to be tagged by the forward/backward detectors at the LHC experiments, is used to explore the top quark electric and magnetic moments. We perform analytical calculations and then a numerical analysis on the sensitivity of the total cross section of the top quark pair production in $\gamma \gamma$ scattering at the LHC to the anomalous top quark couplings with photon. It is shown that improvements in the bounds on the electromagnetic dipole moments of the top quark can be achieved in this channel in comparison with the constraints from the former studies.

14 pages, 7 figures, 3 tables

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Cited by in corpus (8)

• Challenging exclusive top quark pair production at low and high luminosity LHC
• Photon initiated single top quark production via flavor-changing neutral currents at the LHC
• Exploring anomalous $HZ\gamma$ couplings in $\gamma$-proton collisions at the LHC
• Top quark effective couplings from top-pair tagged photoproduction in $p{e}^{-}$ collisions
• Diffractive and photon-induced production of top quark
• Search for central exclusive production of top quark pairs in proton-proton collisions at $\sqrt{s}$ = 13 TeV with tagged protons
• The $\gamma b\overline{b}$ production via ${\gamma }^{\ast }{\gamma }^{\ast }$ collisions at the ILC and LHC
• NNLO QCD corrections to $\gamma \gamma \to Q\bar{Q}$ from Local Unitarity combined with Coulomb resummation and NLO EW effects