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Near-Threshold eta Meson Production in Proton-Proton Collisions

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arxiv nucl-ex/9912011 v1 pith:FMDY5UUT submitted 1999-12-22 nucl-ex

classification nucl-ex
keywords proton-protoncrossproductiontotalavailablebeenclosecollisions
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The production of eta mesons has been measured in the proton-proton interaction close to the reaction threshold using the COSY-11 internal facility at the cooler synchrotron COSY. Total cross sections were determined for eight different excess energies in the range from 0.5 MeV to 5.4 MeV. The energy dependence of the total cross section is well described by the available phase-space volume weighted by FSI factors for the proton-proton and proton-eta pairs.

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