New data and the hard pomeron
Abstract
New structure-function data are in excellent agreement with the existence of a hard pomeron, with intercept about 1.4. It gives a very economical description of the data. Having fixed 2 parameters from the data for the real-photon cross section , we need just 5 further parameters to fit the data for with . The available data range from to 35 GeV. With guesses consistent with dimensional counting for the dependences of our three separate terms, the fit extends well to larger and to GeV. With no additional parameters, it gives a good description of data for the charm structure function from to 130 GeV. The two pomerons also give a good description of both the and the dependence of .
Keywords
Cite
@article{arxiv.hep-ph/0105088,
title = {New data and the hard pomeron},
author = {A Donnachie and P V Landshoff},
journal= {arXiv preprint arXiv:hep-ph/0105088},
year = {2009}
}
Comments
11 pages, plain tex, with 10 figures embedded using epsf. (Spurious figure removed.)