Does the hard pomeron obey Regge factorisation?

Details Does the hard pomeron obey Regge factorisation? Does the hard pomeron obey Regge factorisation?

2004-02-08

arxiv.org/abs/hep-ph/0402081v1

Phys.Lett. B595 (2004) 393-399

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 10 figures

Scientific paper

10.1016/j.physletb.2004.05.068

While data for the proton structure function demand the presence of a hard-pomeron contribution even at quite small Q^2, previous fits to the pp and p\bar p total cross sections have found that in these there is little or no room for such a contribution. We re-analyse the data and show that itmay indeed be present and that, further, it probably obeys Regge factorisation: sigma^{gamma p}(s,Q_1^2)sigma^{gamma p}(s,Q_2^2)= sigma^{pp}(s)sigma^{gamma gamma}(s,Q_1^2,Q_2^2) for all values of Q_1^2 and Q_2^2.

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