One-loop Helicity Amplitudes for Top Quark Pair Production in Randall-Sundrum Model
Hua Xing Zhu, Chong Sheng Li, Liang Dai, Jun Gao, Jian Wang, C.-P.Yuan
TL;DR
This paper analytically calculates one-loop helicity amplitudes for top quark pair production via KK gluons in the Randall-Sundrum model using spinor-helicity formalism, providing a framework applicable to models with massive color octet vectors.
Contribution
It introduces a method to compute one-loop helicity amplitudes for KK gluon-induced top pair production, with derived Feynman rules fixed by gauge invariance and color structure.
Findings
Analytic expressions for one-loop helicity amplitudes obtained.
Feynman rules for KK gluon interactions derived.
Results applicable to models with massive color octet vectors.
Abstract
In this paper, we show how to calculate analytically the one-loop helicity amplitudes for the process induced by KK gluon, using the spinor-helicity formalism. A minimal set of Feynman rules which are uniquely fixed by gauge invariance and the color representation of the KK gluon are derived and used in the calculation. Our results can be applied to a variety of models containing a massive color octet vector boson.
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