Exclusive rho^0 production in deep inelastic scattering at HERA
Abstract
Exclusive rho^0 electroproduction at HERA has been studied with the ZEUS detector using 120 pb^{-1} of integrated luminosity collected during 1996-2000. The analysis was carried out in the kinematic range of photon virtuality 2 < Q^2 < 160 GeV$^2, and gamma^* p centre-of-mass energy 32 < W < 180 GeV. The results include the Q^2 and W dependence of the gamma^* p --> rho^0 p cross section and the distribution of the squared-four-momentum transfer to the proton. The helicity analysis of the decay-matrix elements of the rho^0 was used to study the ratio of the gamma^* p cross section for longitudinal and transverse photon as a function of Q^2 and W. Finally, an effective Pomeron trajectory was extracted. The results are compared to various theoretical predictions.
Keywords
Cite
@article{arxiv.0708.1478,
title = {Exclusive rho^0 production in deep inelastic scattering at HERA},
author = {ZEUS Collaboration and S. Chekanov},
journal= {arXiv preprint arXiv:0708.1478},
year = {2010}
}
Comments
58 pages, 31 figures, 12 tables, minor revisions, accepted for publication in PMC Physics A