Exclusive Leptoproduction of rho^0 Mesons from Hydrogen at Intermediate Virtual Photon Energies

Simple item page
dc.creatorHERMES Collaboration
dc.creatorAirapetian, A.
dc.date2000-04-25
dc.date2000-10-21
dc.date.accessioned2026-07-07T11:34:28Z
dc.date.available2026-07-07T11:34:28Z
dc.descriptionMeasurements of the cross section for exclusive virtual-photoproduction of rho^0 mesons from hydrogen are reported. The data were collected by the HERMES experiment using 27.5 GeV positrons incident on a hydrogen gas target in the HERA storage ring. The invariant mass W of the photon-nucleon system ranges from 4.0 to 6.0 GeV, while the negative squared four-momentum Q^2 of the virtual photon varies from 0.7 to 5.0 GeV^2. The present data together with most of the previous data at W > 4 GeV are well described by a model that infers the W-dependence of the cross section from the dependence on the Bjorken scaling variable x of the unpolarized structure function for deep-inelastic scattering. In addition, a model calculation based on Off-Forward Parton Distributions gives a fairly good account of the longitudinal component of the rho^0 production cross section for Q^2 > 2 GeV^2.
dc.description10 pages, 6 embedded figures, LaTeX for SVJour(epj) document class. Revisions: curves added to Fig. 1, several clarifications added to text
dc.identifierhttps://arxiv.org/abs/hep-ex/0004023
dc.identifierhttp://arxiv.org/abs/hep-ex/0004023
dc.identifierEur.Phys.J.C17:389-398,2000
dc.identifierdoi:10.1007/s100520000483
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/198263
dc.subjectHigh Energy Physics - Experiment
dc.titleExclusive Leptoproduction of rho^0 Mesons from Hydrogen at Intermediate Virtual Photon Energies
dc.typetext

Files

Collections

arXiv