Photoproduction of straight phi(1020) mesons on the proton at large momentum transfer
Phys Rev Lett
; 85(22): 4682-6, 2000 Nov 27.
Article
em En
| MEDLINE
| ID: mdl-11082626
ABSTRACT
The cross section for straight 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 straight phi.
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MEDLINE
Idioma:
En
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Phys Rev Lett
Ano de publicação:
2000
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Article
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França