Wei Zhu — Page 22 | Searcharxiv

arXiv1996

Binding effects and nuclear shadowing

The effects of nuclear binding on nuclear structure functions have so far been studied mainly at fixed target experiments, and there is currently much interest in obtaining a clearer understanding of this phenomenon. We use an existing dynamical model of nuclear structure functions, that gives good agreement with current data, to study this effect in a kinematical regime (low $x$, high $Q^2$) that can possibly be probed by an upgrade of {\sc hera} at {\sc desy} into a nuclear accelerator.

hep-ph↗

arXiv1996

A Dynamical Model for Nuclear Structure Functions

We construct a dynamical model for the parton distributions in a nucleus by perturbative evolution of input distributions from a low starting scale. These input distributions are obtained by modifications of the corresponding free nucleon ones; the modifications being determined by standard nuclear physics considerations. The model gives good agreement with existing data. Its extension to the spin dependent case enables an estimation of nuclear modifications to asymmetries observed in recent doubly polarised deep inelastic scattering experiments. Although the structure functions themselves are very different from the free nucleon ones, their ratio is insensitive to these changes.

hep-ph↗