TY - JOUR
T1 - Soft-collinear factorization in effective field theory
AU - Bauer, Christian W.
AU - Pirjol, Dan
AU - Stewart, Iain W.
PY - 2002
Y1 - 2002
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevD.65.054022
DO - 10.1103/PhysRevD.65.054022
M3 - Article
AN - SCOPUS:0036496327
SN - 1550-7998
VL - 65
SP - 17
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 5
ER -