Extrapolating Structure Functions to Very Small x
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
We review small contributions to perturbative evolution equations for parton distributions, and their resummation. We emphasize in particular the resummation technique recently developed in order to deal with the apparent instability of naive small evolution kernels and understand the empirical sucess of fixed--order perturbation theory. We give predictions for the gluon distribution and the structure functions F_2(x,Q^2) and F_L(x,Q^2) in an extended kinematic region, such as would be relevant for THERA or LEP+LHC ep colliders.
Cite
@article{arxiv.hep-ph/0104246,
title = {Extrapolating Structure Functions to Very Small x},
author = {Guido Altarelli and Richard D. Ball and Stefano Forte},
journal= {arXiv preprint arXiv:hep-ph/0104246},
year = {2007}
}
Comments
14 pages, 4 figures,;latex with bibtex, mcite.sty and thera.bst; contribution to "The THERA book"