Behavior of sigma(gamma p) at Large Coherence Lengths
High Energy Physics - Phenomenology
2008-02-07 v1
Abstract
Various parametrizations of sigma(gamma p) are tried out on the small-x fixed target and HERA data. A two-Pomeron type parametrization is found to give the best reproduction of the data. The data indicate that the value of lambda(eff) for parametrizations of the form sigma(gamma p)~l^lambda(eff) approaches a constant value at high Q^2. The extrapolated values of sigma(gamma p) to very long coherence lengths are found to cross in some parametrizations for l>10^7 fm, indicating the possibility that sigma(gamma p) becomes Q^2 independent at large values of the coherence length l.
Keywords
Cite
@article{arxiv.0802.0769,
title = {Behavior of sigma(gamma p) at Large Coherence Lengths},
author = {Allen Caldwell},
journal= {arXiv preprint arXiv:0802.0769},
year = {2008}
}
Comments
34 pages, 20 figures