https://doi.org/10.1140/epjc/s10052-009-0868-7
Regular Article - Theoretical Physics
Elastic and quasi-elastic pp and γ ⋆ p scattering in the dipole model
1
Dept. of Theoretical Physics, Lund University, Sölvegatan 14A, 223 62, Lund, Sweden
2
II. Institut für Theoretische Physik, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
* e-mail: leif.lonnblad@thep.lu.se
Received:
14
July
2008
Revised:
5
November
2008
Published online:
12
February
2009
We have in earlier papers presented an extension of Mueller’s dipole cascade model, which includes sub-leading effects from energy conservation and running coupling as well as color-suppressed saturation effects from pomeron loops via a “dipole swing”. The model was applied to the description of the total and diffractive cross sections in pp and γ * p collisions, and also the elastic cross section in pp scattering. In this paper we extend the model to the description of the corresponding quasi-elastic cross sections in γ * p, namely the exclusive production of vector mesons and deeply virtual Compton scattering. Also for these reactions we find good agreement with measured cross sections. In addition, we obtain a reasonable description of the t-dependence of the elastic pp and quasi-elastic γ ⋆ p cross sections.
© Springer-Verlag , 2009
