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arXiv · 1605.06226

Employing Helicity Amplitudes for Resummation in SCET

Ian Moult·Iain W. Stewart·Frank J. Tackmann·Wouter J. Waalewijn
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Abstract

Helicity amplitudes are the fundamental ingredients of many QCD calculations for multi-leg processes. We describe how these can seamlessly be combined with resummation in Soft-Collinear Effective Theory (SCET), by constructing a helicity operator basis for which the Wilson coefficients are directly given in terms of color-ordered helicity amplitudes. This basis is crossing symmetric and has simple transformation properties under discrete symmetries.

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Ian Moult, Iain W. Stewart, Frank J. Tackmann, Wouter J. Waalewijn. 2016-05-20. Employing Helicity Amplitudes for Resummation in SCET. https://arxiv.org/abs/1605.06226

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