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Proton Dissociative $\rho$ and Elastic $\phi$ Electroproduction at HERA (2006)

Abstract
The electroproduction of rho mesons with proton diffractive dissociation for Q^2 7 GeV^2 and the elastic electroproduction of Phi mesons for Q^2 6 Gev^2 are studied in e^+ p collisions at HERA with the H1 detector, for an integrated luminosity of 2.8 pb-1. The dependence of the cross sections on P_t^2 and Q^2 is measured, and the vector meson polarisation obtained. The cross section ratio between proton dissociative and elastic production of rho mesons is measured and discussed in the framework of the factorisation hypothesis of diffractive vertices. The ratio of the elastic cross section for Phi and rho meson production is investigated as a function of Q^2.

Publication details
Download http://hal.in2p3.fr/in2p3-00013448/en/
Publisher HAL - CCSd - CNRS
Contributors Jean-Michel Levy
Repository CCSd/HAL : e-articles server (based on gBUS) (France)
Keywords Physics/High Energy Physics - Experiment
Type ART_ACL