Gluon shadowing in the Glauber-Gribov model at HERA

Details Gluon shadowing in the Glauber-Gribov model at HERA Gluon shadowing in the Glauber-Gribov model at HERA

2007-05-11

arxiv.org/abs/0705.1596v2

Phys.Lett.B657:170-175,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 6 figures; references added, discussion of model enlarged, calculation of low-x contribution corrected; to appear in

Scientific paper

10.1016/j.physletb.2007.09.065

We calculate shadowing using new data on the gluon density of the Pomeron recently measured with high precision at HERA. The calculations are made in a Glauber-Gribov framework and Pomeron tree-diagrams are summed up within a unitarity-conserving procedure. The total cross section of $\vphot A$ interaction is then found in a parameter-free description, employing gluon diffractive and inclusive distribution functions as input. A strong shadowing effect is obtained, in good agreement with several other models. Impact parameter dependence of gluon shadowing is also presented.

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