Search for anomalous couplings via single top quark production in association with a photon at LHC

Abstract

Considering the experimental constraints given by CMS collaboration at $\sqrt{s}=8$ TeV on the strength of top quark flavour-changing neutral-current (FCNC) couplings $tq\gamma$ and $tqg$, we investigate the production of top quark in association with a photon and carry out a full simulation for the signals $\ell \nu b\gamma$ and $jjb\gamma$ at 14 TeV LHC. In our numerical analysis, the contributions of single top production with a photon radiation off the top decay products are also included. The discovery potential for anomalous couplings $tq\gamma$ and $tqg$ with an integrated luminosity of 100 fb${}^{-1}$ are examined in detail.

21 pages,11 figures

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Cited by in corpus (12)

• Top-philic heavy resonances in four-top final states and their EFT interpretation
• Probing top quark FCNC couplings in the triple-top signal at the high energy LHC and future circular collider
• Constraining top quark flavor violation and dipole moments through three and four top quark productions at the LHC
• New flavor physics in di- and tri-lepton events from single-top at the LHC and beyond
• Searches for anomalous $tqZ$ couplings from the trilepton signal of $tZ$ associated production at the 14 TeV LHC
• Multi-lepton probes of new physics and lepton-universality in top-quark interactions
• Top quark anomalous FCNC production via $tqg$ couplings at FCC-hh
• Associated production of a top quark with a photon via anomalous couplings
• Probing anomalous $tq\gamma$ and $tqg$ couplings via single top production in association with photon at FCC-hh
• Probing the anomalous $tq\gamma$ couplings through single top production at the future lepton-hadron colliders
• Probing the anomalous tqgamma couplings in photon-proton collisions
• Searching for top-philic heavy resonances in boosted four-top final states