Limits on strong FCNC top couplings at the LHC

Abstract

The best limit on the strong FCNC anomalous couplings was obtained using the direct top production process at the Large Hadron Collider by the ATLAS collaboration. We perform a similar analysis but using a next-to-leading order generator, MEtop. We then show how the limits could be improved if the FCNC single top process $pp\to tj$ would be included as signal. Finally we discuss a slightly modified analysis with an extra hard jet in the final state.

7 pages, 5 figures

References in corpus (8)

• PYTHIA 6.4 Physics and Manual
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• Single-top Wt-channel production matched with parton showers using the POWHEG method
• Effective four-fermion operators in top physics: a roadmap
• Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb^-1 of ppbar collisions
• Dimension six FCNC operators and top production at the LHC
• Search for anomalous top quark production at the early LHC
• MEtop - a generator for single top production via FCNC interactions

Cited by in corpus (6)

• Probing the Anomalous FCNC Interactions in Top-Higgs Final State and Charge Ratio Approach
• Single top quark production as a probe of anomalous $tq\gamma$ and $tqZ$ couplings at the FCC-ee
• Search for flavour-changing neutral-current interactions of a top quark and a gluon in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Probing the Top Quark Flavour-Changing Neutral Current at a Future Electron-Positron Collider
• Limits on the anomalous $Wtq$ couplings
• Soft-Gluon Corrections in FCNC Top-Quark Production via Anomalous Gluon Couplings