Charm production at HERA

A Donnachie, P V Landshoff

Published 1999-10-07, updated 1999-11-02Version 2

The ZEUS data on the charm structure function F_2^c at small x fit well to a single power of x, corresponding to the exchange of a hard pomeron that is flavour-blind. When combined with the contribution from the exchange of a soft pomeron, the hard pomeron gives a good description of elastic $J/\psi$ photoproduction.