Probing top anomalous couplings at the LHC with trilepton signatures in the single top mode

Abstract

We investigate trilepton final states to probe top anomalous couplings at the Large Hadron Collider. We focus on events originating from the associated production of a single top quark with a Z-boson, a channel sensitive to several flavor-changing neutral interactions of top and up/charm quarks. In particular, we explore a way to access simultaneously their anomalous couplings to Z-bosons and gluons and derive the discovery potential of trilepton final states to such interactions with 20 fb-1 of 8 TeV collisions. We show that effective coupling strengths of O(0.1-1) TeV-1 can be reached. Equivalently, branching fractions of top quarks into lighter quarks and gluons or Z-bosons can be constrained to be below O(0.1-1)%.

5 pages, 3 figures, 1 table; version accepted by PLB

References in corpus (16)

• PYTHIA 6.4 Physics and Manual
• New parton distributions for collider physics
• FeynRules - Feynman rules made easy
• Vector boson pair production at the LHC
• -- HATHOR -- HAdronic Top and Heavy quarks crOss section calculatoR
• MadAnalysis 5, a user-friendly framework for collider phenomenology
• FEWZ 2.0: A code for hadronic Z production at next-to-next-to-leading order
• QCD radiation in the production of heavy colored particles at the LHC
• Top-Quark Decay at Next-to-Next-to-Leading Order in QCD
• Measurement of WZ production in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Measurement of the sum of WW and WZ production with W+dijet events in pp collisions at sqrt(s) = 7 TeV
• Beyond the Minimal Supersymmetric Standard Model: from theory to phenomenology
• Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb^-1 of ppbar collisions
• A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at sqrt(s) = 7 TeV
• Search for production of single top quarks via flavor-changing neutral currents at the Tevatron
• Search for flavor changing neutral currents in top quark decays in pp collisions at 7 TeV

Cited by in corpus (26)

• The Standard Model as an Effective Field Theory
• Designing and recasting LHC analyses with MadAnalysis 5
• A global approach to top-quark flavor-changing interactions
• Revisiting slepton pair production at the Large Hadron Collider
• Effective field theory approach to top-quark decay at next-to-leading order in QCD
• Search for associated production of a Z boson with a single top quark and for tZ flavour-changing interactions in pp collisions at sqrt(s) = 8 TeV
• Probing the Anomalous FCNC Interactions in Top-Higgs Final State and Charge Ratio Approach
• Monotop phenomenology at the Large Hadron Collider
• Measurement of the associated production of a single top quark and a Z boson in pp collisions at $\sqrt{s}=$ 13 TeV
• Top-philic heavy resonances in four-top final states and their EFT interpretation
• Observation of single top quark production in association with a Z boson in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Direct and Indirect Searches for Top-Higgs FCNC Couplings
• Higher-order corrections for $tZ$ production via anomalous couplings
• New flavor physics in di- and tri-lepton events from single-top at the LHC and beyond
• Probing tqZ anomalous couplings in the trilepton signal at the HL-LHC, HE-LHC and FCC-hh
• Constraints on top quark flavor changing neutral currents using diphoton events at the LHC
• 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
• Search for anomalous couplings via single top quark production in association with a photon at LHC
• Multilepton signals of gauge mediated supersymmetry breaking at the LHC
• Probing anomalous $tq\gamma$ and $tqg$ couplings via single top production in association with photon at FCC-hh
• Probing the Top Quark Flavour-Changing Neutral Current at a Future Electron-Positron Collider
• Flavour-changing top quark decays in the alternative left-right model
• Soft-gluon corrections for single top quark production in association with electroweak bosons
• Searching for top-philic heavy resonances in boosted four-top final states