Latest constraint on non-standard top-gluon couplings at hadron colliders and its future prospect

Abstract

Constraints on the non-standard top-gluon couplings composed of the chromomagnetic- and chromoelectric-dipole moments of the top quark are updated by combining the latest data of top-pair productions from the Tevatron, 7-TeV LHC, and 8-TeV LHC. We find that adding the recent 8-TeV data to the analysis is effective to get a stronger constraint on the chromoelectric-dipole moment than the one from the Tevatron and 7-TeV LHC alone. We also discuss how those constraints on the non-standard couplings could be further improved when 14-TeV LHC results become available in the near future.

Some discussion on SM-loop effects and two related references added. Final version appeared in Phys. Rev. D

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• Is there room for CP violation in the top-Higgs sector?
• A global fit of top quark effective theory to data
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• Pinning down top dipole moments with ultra-boosted tops
• Top Down Electroweak Dipole Operators
• Measuring anomalous WW$\gamma$ and t$\bar{\text{t}}\gamma$ couplings using top+$\gamma$ production at the LHC
• Probing $tt\gamma$ and $ttZ$ couplings at the LHeC
• Top quark Chromoelectric and Chromomagnetic Dipole Moments in a Two Higgs Doublet Model with CP violation
• Stringent limits on top-quark compositeness from top anti-top production at the Tevatron and the LHC
• Anomalous chromomagnetic moment of quarks
• T-odd correlations from top-quark CEDM in lepton plus jets top-pair events
• Probing the top quark chromoelectric and chromomagnetic dipole moments in single top $tW$-channel at the LHC
• Effective Field Theory in the top sector: do multijets help?
• Top and bottom tensor couplings from a color octet scalar
• Study of top quark dipole interactions in $t\bar{t}$ production associated with two heavy gauge bosons at the LHC
• Limits on the anomalous $Wtq$ couplings
• Constraints on top quark non-standard interactions from Higgs and $t\bar{t}$ production cross sections
• Bounds on the absorptive parts of the chromomagnetic and chromoelectric dipole moments of the top quark from LHC data
• Probing the nonstandard top-gluon couplings through $t\bar{t}\gamma \gamma$ production at the LHC
• Direct photon production as a probe of quarks chromoelectric and chromomagnetic dipole moments at the LHC
• Final charged-lepton angular distribution and possible anomalous top-quark couplings in p p -> t tbar X -> l^+ X'
• Top quark physics in the Large Hadron Collider era
• Staying on Top of SMEFT-Likelihood Analyses
• Investigating the Violation of Charge Parity Symmetry Through Top Quark Chromo-Electric Dipole Moments by Using Machine Learning Techniques
• Probing top quark anomalous moments in $W$ boson associated single top quark production at the LHC using polarization and spin correlation
• Quark ACM with topologically generated gluon mass