Theoretical Aspects of Azimuthal and Transverse Spin Asymmetries
High Energy Physics - Phenomenology
2015-06-25 v2
Abstract
We use Lorentz invariance and the QCD equations of motion to study the evolution of functions that appear at leading (zeroth) 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, restricted to the non-singlet case for the chiral-even functions.
Cite
@article{arxiv.hep-ph/0106171,
title = {Theoretical Aspects of Azimuthal and Transverse Spin Asymmetries},
author = {P. J. Mulders and A. A. Henneman and D. Boer},
journal= {arXiv preprint arXiv:hep-ph/0106171},
year = {2015}
}
Comments
6 pages Latex, using sprocl.sty; Talk at the 9th International Workshop on Deep Inelastic Scattering and QCD (DIS2001), Bologna, Italy, Apr. 27- May 1, 2001; reference corrected