Nuclear shadowing in deep inelastic scattering on nuclei: leading twist versus eikonal approaches


Frankfurt, Leonid, Guzey, Vadim, McDermott, Martin and Strikman, Mark (2002) Nuclear shadowing in deep inelastic scattering on nuclei: leading twist versus eikonal approaches. Journal of High Energy Physics, 2002 (02). 027-027. ISSN 1029-8479, 1029-8479

[thumbnail of 0201230v1.pdf] PDF
0201230v1.pdf - Unspecified
Access to this file is embargoed until Unspecified.
Download (695kB)
[thumbnail of Requires a viewer, such as GSview] Postscript (Requires a viewer, such as GSview)
0201230v1.ps.ps - Unspecified
Access to this file is embargoed until Unspecified.
Download (1MB)

Abstract

We use several diverse parameterizations of diffractive parton distributions, extracted in leading twist QCD analyses of the HERA diffractive deep inelastic scattering (DIS) data, to make predictions for leading twist nuclear shadowing of nuclear quark and gluon distributions in DIS on nuclei. We find that the HERA diffractive data are sufficiently precise to allow us to predict large nuclear shadowing for gluons and quarks, unambiguously. We performed detailed studies of nuclear shadowing for up and charm sea quarks and gluons within several scenarios of shadowing and diffractive slopes, as well as at central impact parameters. We compare these leading twist results with those obtained from the eikonal approach to nuclear shadowing (which is based on a very different space-time picture) and observe sharply contrasting predictions for the size and Q2-dependence of nuclear shadowing. The most striking differences arise for the interaction of small dipoles with nuclei, in particular for the longitudinal structure function FLA.

Item Type: Article
Additional Information: LTH 522. arXiv Number: arXiv:hep-ph/0201230v1. 43 pages. Published 5 March 2002. Issue: February 2002.
Uncontrolled Keywords: QCD, Deep Inelastic Scattering, Phenomenological Models, DIFFRACTIVE PRODUCTION, HARD-SCATTERING, SMALL-X, PARTON DISTRIBUTIONS, DIMUON PRODUCTION, Q(2) DEPENDENCE, CROSS-SECTION, DIS, FACTORIZATION, PHOTONS
Subjects: ?? QC ??
Divisions: Faculty of Science and Engineering > School of Physical Sciences > Mathematical Sciences
Depositing User: Symplectic Admin
Date Deposited: 15 Apr 2009 09:51
Last Modified: 24 May 2025 01:58
DOI: 10.1088/1126-6708/2002/02/027
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/563
Altmetric
CORE (COnnecting REpositories)