Wednesday, July 3, 2013

1307.0165 (Amir H. Rezaeian et al.)

IP-Sat: Impact-Parameter dependent Saturation model; revised    [PDF]

Amir H. Rezaeian, Marat Siddikov, Merijn Van de Klundert, Raju Venugopalan
In this talk, we present a global analysis of available small-x data on inclusive DIS and exclusive diffractive processes, including the latest data from the combined HERA analysis on reduced cross sections within the Impact-Parameter dependent Saturation (IP-Sat) Model. The impact-parameter dependence of dipole amplitude is crucial in order to have a unified description of both inclusive and exclusive diffractive processes. With the parameters of model fixed via a fit to the high-precision reduced cross-section, we compare model predictions to data for the structure functions, the longitudinal structure function, the charm structure function, exclusive vector mesons production and Deeply Virtual Compton Scattering (DVCS). Excellent agreement is obtained for the processes considered at small x in a wide range of Q^2.
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