Production of eta mesons in nucleon-nucleon collisions

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dc.creatorBaru, V.
dc.creatorGasparyan, A. M.
dc.creatorHaidenbauer, J.
dc.creatorHanhart, C.
dc.creatorKudryavtsev, A. E.
dc.creatorSpeth, J.
dc.date2002-12-03
dc.date.accessioned2026-07-07T11:48:20Z
dc.date.available2026-07-07T11:48:20Z
dc.descriptionA microscopic calculation of near-threshold eta-meson production in the reaction NN -> NNeta is presented. It is assumed that the eta meson is produced via direct emission and via elementary rescattering processes MN -> etaN of various mesons M = pi, rho, etc. As a novel feature the amplitudes for the latter production mechanism are taken from a multi-channel meson-exchange model of the pi N system developed by the Juelich group which contains explicitly the channels pi N, rho N, eta N, sigma N, and pi Delta. Furthermore, effects of the NN interaction in the final as well as in the initial state are taken into account microscopically. Our results are compared with recent data from the COSY and CELSIUS accelerator facilities. Reasonable agreement with available near-threshold cross section data for the reactions pp -> ppeta, pn -> pneta, and pn -> deta is found.
dc.description25 pages, 11 figures
dc.identifierhttps://arxiv.org/abs/nucl-th/0212014
dc.identifierhttp://arxiv.org/abs/nucl-th/0212014
dc.identifierPhys.Rev.C67:024002,2003
dc.identifierdoi:10.1103/PhysRevC.67.024002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202885
dc.subjectNuclear Theory
dc.titleProduction of eta mesons in nucleon-nucleon collisions
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