Journal
PHYSICAL REVIEW D
Volume 67, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.67.116003
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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 my earlier paper. The helicity-summed squares of these functions are thus also generalizations to multiple singular emission of the Catani-Seymour dipole factorization function.
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