Production of Massive Color-Octet Vector Bosons at Next-to-Leading Order

TL;DR

This paper presents the first complete NLO QCD calculation for the production of massive color-octet vector bosons, improving theoretical precision and providing results applicable to various beyond Standard Model scenarios.

Contribution

It provides the first full NLO QCD corrections for color-octet vector boson production, including virtual and real emission effects, reducing scale dependence and offering key predictions for experiments.

Findings

QCD NLO corrections increase production rates by up to 30%.

Residual scale dependence is reduced to about 2%.

Calculated K-factors and p_T spectra for experimental comparison.

Abstract

We report the first complete calculation of QCD corrections to the production of a massive color-octet vector boson. Our next-to-leading-order (NLO) calculation includes both virtual corrections as well as corrections arising from the emission of gluons and light quarks, and we demonstrate the reduction in factorization-scale dependence relative to the leading-order approximation used in previous hadron collider studies. We show that the QCD NLO corrections to coloron production are as large as 30%, and that the residual factorization scale-dependence is reduced to of order 2%. We also calculate the K-factor and the p_T spectrum for coloron production, since these are valuable for comparison with experiment. Our results apply directly to the production of the massive color-octet vector bosons in axigluon, topcolor, and coloron models, and approximately to the production of KK gluons in extra-dimensional models or color-octet technivector mesons in technicolor models.