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Photoproduction of the rho(0) meson on the proton at large momentum transfer
Physical Review Letters. 2001 Oct 22;8717(17) :-
PMID: ISI:000171708900012   
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Abstract
The differential cross section, d sigma /dt, for rho (0) meson photoproduction on the proton above the resonance region was measured. up to a momentum transfer -t = 5 GeV2 using the CLAS detector at the Thomas Jefferson National Accelerator Facility. The rho (0) channel was extracted from the measured two charged-pion cross sections by fitting the pi (+)pi (-) and p pi (+) invariant masses. The low momentum transfer region shows the typical diffractive pattern expected from Reggeon exchange. The flatter behavior at large -t cannot be explained solely in terms of QCD-inspired two-gluon exchange models. The data indicate that other processes, like quark interchange, are important to fully describe rho photoproduction.
Notes
484UX Times Cited:30 Cited References Count:29