Precise QCD predictions on top quark pair production mediated by massive color-octet vector boson at hadron collidersReport as inadecuate




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The European Physical Journal C

, 72:2232

First Online: 20 November 2012Received: 24 August 2012Revised: 30 October 2012

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.

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Author: Hua Xing Zhu - Chong Sheng Li - Ding Yu Shao - Jian Wang - C.-P. Yuan

Source: https://link.springer.com/



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