Combining Fixed-Order Helicity Amplitudes With Resummation Using SCET
arXiv:1211.2305
Abstract
We discuss how to construct a simple and easy-to-use helicity operator basis in Soft-Collinear Effective Theory (SCET), for which the hard Wilson coefficients from matching QCD onto SCET are directly given in terms of the color-ordered QCD helicity amplitudes. This provides an interface to seamlessly combine fixed-order helicity amplitudes, which are the basic building blocks of state-of-the-art next-to-leading order calculations for multileg processes, with a resummation of higher-order logarithmic corrections using SCET.
Contribution to proceedings of "Loops and Legs in Quantum Field Theory", April 15-20, 2012, Wernigerode, Germany
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