Gluon shadowing in the Glauber–Gribov model at HERA

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 γ∗A interaction...

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Bibliographic Details
Published in:Physics letters. B 2007-12, Vol.657 (4-5), p.170-175
Main Authors: Tywoniuk, K., Arsene, I.C., Bravina, L., Kaidalov, A.B., Zabrodin, E.
Format: Article
Language:English
Subjects:
Gribov–Regge theory
Nuclear shadowing
Nuclear structure function
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Summary: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 γ∗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 a good agreement with several other models. Impact parameter dependence of gluon shadowing is also presented.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2007.09.065