Precise QCD predictions on top quark pair production mediated by massive color octet vector boson at hadron colliders

Abstract

We present a theoretical framework for systematically calculating next-to-leading order (NLO) QCD effects to various experimental observables in models with massive COVB in a model independent way at hadron colliders. Specifically, we show the numerical results for the NLO QCD corrections to total cross sections, invariant mass distribution and AFB of top quark pairs production mediated by a massive COVB in both the fixed scale (top quark mass) scheme and the dynamical scale (top pair invariant mass) scheme. Our results show that the NLO QCD calculations in the dynamical scale scheme is more reasonable than the fixed scheme and the naive estimate of the NLO effects by simple rescaling of the LO results with the SM NLO K-factor is not appropriate.

6 pages, 5 figures, 2 tables; version published in EPJC

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• Interpretations and Implications of the Top Quark Rapidity Asymmetries $A_{FB}^t$ and $A_{FB}^{\ell }$
• Impact of a colored vector resonance on the collider constraints for top-like top partner
• Top quark physics in the Vector Color-Octet Model
• A complete next-to-leading order QCD description of resonant $Z^{\prime }$ production and decay into $t\bar{t}$ final states
• Kaluza-Klein gluons at 100 TeV: NLO corrections
• QCD corrections to massive color-octet vector boson pair production
• The chiral color symmetry of quarks and $G^{\prime }$-boson contributions to charge asymmetry in $t\bar{t}$-production at the LHC and Tevatron
• Above And Beyond The Standard Model: On Phenomenology Of Lee-Wick Theory And Massive Vector Color-Octet