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Spokesperson

M. Battaglieri

Abstract

The cross section for phi meson photoproduction on the proton has been measured for the first time up to a four-momentum transfer -t = 4 GeV2, using the CLAS detector at the Thomas Jefferson National Accelerator Facility. At low four-momentum transfer, the differential cross section is well described by Pomeron exchange. At large four-momentum transfer, above -t = 1.8 GeV2, the data support a model where the Pomeron is resolved into its simplest component, two gluons, which may couple to any quark in the proton and in the phi.

Publication

1. E. Anciant, T. Auger, G. Audit, M. Battaglieri, J. M. Laget, C. Marchand, and CLAS Collaboration Photoproduction of Phi(1020) Mesons on the Proton at Large Momentum Transfer // Phys.Rev.Let.85,4682(2000)

Quantities

dσ/dt

Measurements