Measurement of exclusive omega electroproduction at HERA

Details Measurement of exclusive omega electroproduction at HERA Measurement of exclusive omega electroproduction at HERA

2000-06-12

arxiv.org/abs/hep-ex/0006013v2

Phys.Lett.B487:273-288,2000

Physics

High Energy Physics

High Energy Physics - Experiment

15 pages including 4 figures

Scientific paper

10.1016/S0370-2693(00)00794-2

The exclusive electroproduction of omega mesons, ep -> e omega p, has been studied in the kinematic range 3 pi^+pi^-pi^0. The exclusive (ep -> e omega p) cross section in the above kinematic region is 0.108 +- 0.014(stat.) +- 0.026(syst.) nb. The reaction ep -> e phi p, phi -> pi^+pi^-pi^0, has also been measured. The cross sections, as well as the cross-section ratios omega/rho and omega/phi, are presented as a function of W and Q^2. Thus, for the first time, the properties of omega electroproduction can be compared to those of rho^0, phi and J/psi electroproduction at high W.

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