1998/06/06 by W. Schaefer, Schaefer, W.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9806297
5 pages, 3 eps-figures. To be published in Proceedings of DIS'98
arxiv created 1998/06/06 · arxiv updated 2009/11/30
The dependence of the diffractive nuclear shadowing and the nuclear pion excess effect on the deuteron spin alignment leads to a substantial tensor polarisation of sea partons in the deuteron. The corresponding tensor structure function b2(x,Q2) rises towards small x, and we predict the about one percent tensor asymmetry A2(x,Q2) =b2(x,Q2)/F2D(x,Q2). We calculate the shadowing of the gluon distribution in the deuteron for two different pomeron gluon-distributions. For a hard gluon dominated \Pom-structure function, as advocated by H1, we find large gluon shadowing, which appears to be in conflict with the DGLAP analysis of nuclear SF's.