Relating transverse-momentum-dependent and collinear factorization theorems in a generalized formalism
Journal
Physical Review D
Journal Volume
94
Journal Issue
3
Date Issued
2016
Author(s)
Collins J
Gamberg L
Prokudin A
Rogers T.C
Sato N
Wang B.
Abstract
We construct an improved implementation for combining transverse-momentum-dependent (TMD) factorization and collinear factorization. TMD factorization is suitable for low transverse momentum physics, while collinear factorization is suitable for high transverse momenta and for a cross section integrated over transverse momentum. The result is a modified version of the standard W+Y prescription traditionally used in the Collins-Soper-Sterman (CSS) formalism and related approaches. We further argue that questions regarding the shape and Q dependence of the cross sections at lower Q are largely governed by the matching to the Y term. © 2016 American Physical Society.
Type
journal article