Evolution of transverse momentum dependent distribution and fragmentation functions
High Energy Physics - Phenomenology
2009-11-07 v1
Abstract
We use Lorentz invariance and the QCD equations of motion to study the evolution of functions that appear at leading order in a 1/Q expansion in azimuthal asymmetries. This includes the evolution equation of the Collins fragmentation function. The moments of these functions are matrix elements of known twist two and twist three operators. We present the evolution in the large N_c limit, restricting to non-singlet for the chiral-even functions.
Keywords
Cite
@article{arxiv.hep-ph/0104271,
title = {Evolution of transverse momentum dependent distribution and fragmentation functions},
author = {A. A. Henneman and Daniel Boer and P. J. Mulders},
journal= {arXiv preprint arXiv:hep-ph/0104271},
year = {2009}
}
Comments
15 pages revtex