ar X iv : h ep - p h / 99 10 25 1 v 1 6 O ct 1 99 9 1 Predicting F D ( 3 ) 2 from the dipole cross - section
نویسنده
چکیده
The proton dipole cross section σd is a universal quantity in singly dissociative diffractive γ p processes. It is simply the total cross section for scattering a qq̄ pair of a given size and energy in the photonic fluctuation off the proton target. We make use of a parameterisation used to extract σd from a fit to electroproduction and photoproduction γ p total cross-section data [1] to predict the diffractive structure function F D(3) 2 (Q , β, xIP ).
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