Charm production at HERA

Abstract

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.

Comments: 6 pages, plain tex, with 3 figures embedded using epsf. Typos corrected in equations (10) and (11)