Gluon versus sea quark shadowing

  • We calculate the shadowing of sea quarks and gluons and show that the shadowing of gluons is not simply given by the sea quark shadowing, especially at small x. The calculations are done in the lab frame approach by using the generalized vector meson dominance model. Here the virtual photon turns into a hadronic fluctuation long before the nucleus. The subsequent coherent interaction with more than one nucleon in the nucleus leads to the depletion sigma(gamma*A )< A*sigma(gamma * N) known as shadowing. A comparison of the shadowing of quarks to E665 data for 40Ca and 207Pb shows good agreement.

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Author:Nils HammonGND, Horst StöckerORCiDGND, Walter GreinerGND
Parent Title (German):Physics Letters B
Document Type:Article
Date of Publication (online):2005/12/06
Year of first Publication:1999
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2005/12/06
Tag:gluon; hadronic fluctuation; quark shadowing
GND Keyword:Schwankung; Quark; Gluon; Hadron
First Page:290
Last Page:294
Source:Phys.Lett.B488: 290-294,1999.
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht