Exclusive $ρ^0$ meson electroproduction from hydrogen at CLAS

Details Exclusive $ρ^0$ meson electroproduction from hydrogen at CLAS Exclusive $ρ^0$ meson electroproduction from hydrogen at CLAS

2004-08-03

arxiv.org/abs/hep-ex/0408005v1

Phys.Lett.B605:256-264,2005

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages, 4 figures

Scientific paper

10.1016/j.physletb.2004.11.019

The longitudinal and transverse components of the cross section for the $e p\to e^\prime p \rho^0$ reaction were measured in Hall B at Jefferson Laboratory using the CLAS detector. The data were taken with a 4.247 GeV electron beam and were analyzed in a range of $x_B$ from 0.2 to 0.6 and of $Q^2$ from 1.5 to 3.0 GeV$^2$. The data are compared to a Regge model based on effective hadronic degrees of freedom and to a calculation based on Generalized Parton Distributions. It is found that the transverse part of the cross section is well described by the former approach while the longitudinal part can be reproduced by the latter.

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