Non-perturbative effects in the W and Z transverse momentum distribution
High Energy Physics - Phenomenology
2011-03-23 v1
Abstract
We use the "dispersive method" to investigate non-perturbative effects in the transverse momentum distribution of vector bosons produced in p-pbar collisions. The assumption of a non-perturbative modification to the running coupling at low scales leads to additional contributions in impact parameter space proportional to -b^2 log Q^2 and -b^2. Our results, which we expect to be valid provided tau is not close to 1, are shown to account for a substantial proportion of the total non-perturbative contribution extracted from data.
Keywords
Cite
@article{arxiv.hep-ph/0007190,
title = {Non-perturbative effects in the W and Z transverse momentum distribution},
author = {A. Guffanti and G. E. Smye},
journal= {arXiv preprint arXiv:hep-ph/0007190},
year = {2011}
}
Comments
18 pages, 3 figures