Color transparent generalized parton distributions

Abstract

The relation between generalized parton distributions (GPDs) and color transparency is explored. Computing the effective size of a hadron yields equations that relate the potential observation of color transparency with specific features of the GPD and the related form factor. Measurement of the effective size allows one to distinguish between different GPDs that yield the same form factor, and therefore provides a further test of any model of the pion form factor. It is also true that the discovery of color transparency in pionic diffractive dissociation reactions gives specific predictions for the behavior of the pion generalized parton distribution, and allows us to rule out some models.