Exclusive ρ0 Vector Meson Production in Polarised Lepton-Nucleon Scattering

Details Exclusive ρ0 Vector Meson Production in Polarised Lepton-Nucleon Scattering Exclusive ρ0 Vector Meson Production in Polarised Lepton-Nucleon Scattering

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001fpu..conf..342m&link_type=abstract

FROM PARTICLES TO THE UNIVERSE. Proceedings of the Fifteenth Lake Louise Winter Institute. Held 20-26 February 2000 in Lake Loui

Physics

Scientific paper

The differential cross section and double-spin cross section asymmetries for exclusive ρ0 production in lepton-nucleon scattering have been measured at the HERMES experiment. The longitudinally polarised 27.56 GeV HERA positron beam was scattered off a longitudinally polarised pure hydrogen gas target. The average invariant mass of the photon-nucleon system has a value = 24 GeV2, a kinematic domain where the steep decrease of the cross section at lower W changes into an almost flat W dependence. A positive longitudinal double-spin asymmetry in the cross section for exclusive ρ0(770) production was observed.

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