$p\bar{p}\to \hat{I}{›}_c\bar{\hat{I}}{›}_c$ within a Handbag Picture -- Cross Section and Spin Observables

Abstract

We study the process $p\bar{p}\to \hat{I}{›}_c\bar{\hat{I}}{›}_c$ within the generalized parton picture. Our starting point is the double handbag diagram which factorizes into soft generalized parton distributions and a hard subprocess amplitude for $u\bar{u}\to c\bar{c}$. Our cross-section predictions may become interesting in view of forthcoming experiments at FAIR in Darmstadt.

Talk given by A.T.Goritschnig at the "18th International Spin Physics Symposium" (SPIN 2008), Charlottesville (VA), USA, Oct. 2008