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arXiv · 0910.5113

The Factorisation of the t-channel Pole in Quark-Gluon Scattering

Jeppe R. Andersen·Jennifer M. Smillie
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Abstract

By exploring the scattering of specific helicity states in quark-gluon scattering at tree level we show explicitly that the t-channel pole can be described exactly as a contraction of two local currents. Furthermore, we demonstrate that out of eight non-zero helicity possibilities, only two suppressed channels have contributions that are not pure, factorised t-channel poles. We thereby extract a gauge-invariant definition for the t-channel current generated by the scattering of a gluon. This offers a slight improvement in the description of gluon scattering in the framework of arXiv:0908.2786 for the prediction of n-jet rates at hadron colliders.

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Jeppe R. Andersen, Jennifer M. Smillie. 2009-10-27. The Factorisation of the t-channel Pole in Quark-Gluon Scattering. https://doi.org/10.1103/physrevd.81.114021

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