Soft-collinear factorization in effective field theory

Christian W. Bauer, Dan Pirjol, Iain W. Stewart

Research output: Contribution to journalArticlepeer-review

1247 Scopus citations

Abstract

The factorization of soft and ultrasoft gluons from collinear particles is shown at the level of operators in an effective field theory. Exclusive hadronic factorization and inclusive partonic factorization follow as special cases. The leading-order Lagrangian is derived using power counting and gauge invariance in the effective theory. Several species of gluons are required, and softer gluons appear as background fields to gluons with harder momenta. Two examples are given: the factorization of soft gluons in (Formula presented) and the soft-collinear convolution for the (Formula presented) spectrum.

Original languageEnglish
Pages (from-to)17
Number of pages1
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume65
Issue number5
DOIs
StatePublished - 2002

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