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.
| Author: | Nils Hammon, Horst Stöcker, Walter Greiner |
|---|---|
| URN: | urn:nbn:de:hebis:30-22790 |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 06.12.2005 |
| Year of first Publication: | 1999 |
| Publishing Institution: | Univ.-Bibliothek Frankfurt am Main |
| Tag: | gluon ; hadronic fluctuation; quark shadowing |
| SWD-Keyword: | Gluon ; Hadron; Quark ; Schwankung |
| Source: | Phys.Lett.B488: 290-294,1999. |
| Institutes: | Physik |
| Dewey Decimal Classification: | 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Veröffentlichungsvertrag für Publikationen ohne Print on Demand |
