Multiple Singular Emission in Gauge Theories

Abstract

I derive a class of functions unifying all singular limits for the emission of a given number of soft or collinear gluons in tree-level gauge-theory amplitudes. Each function is a generalization of the single-emission antenna function of ref. [1]. The helicity-summed squares of these functions are thus also generalizations to multiple singular emission of the Catani--Seymour dipole factorization function.

Corrections for final journal version (sign in eqn. (6.11), equation references, typos in indices) & removal of comment about FDH

References in corpus (1)

• Multi-Parton Amplitudes in Gauge Theories

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