Author/Authors :
A. Donnachie، نويسنده , , P.V. Landshoff، نويسنده ,
Abstract :
The ZEUS data on the charm structure function F2c 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/ψ photoproduction.