Coupled-channels study of the $π^{-}p \to ηn$ process

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dc.creatorDurand, J.
dc.creatorJuliá-Díaz, B.
dc.creatorLee, T. -S. H.
dc.creatorSaghai, B.
dc.creatorSato, T.
dc.date2008-04-22
dc.date.accessioned2026-07-07T11:50:05Z
dc.date.available2026-07-07T11:50:05Z
dc.descriptionThe reaction $π^{-}p \to ηn$ is investigated within a dynamical coupled-channels model of meson production reactions in the nucleon resonance region. The meson baryon channels included are $πN$, $ηN$, $πΔ$, $σN$, and $ρN$. The non-resonant meson-baryon interactions of the model are derived from a set of Lagrangians by using a unitary transformation method. One or two excited nucleon states in each of $S$, $P$, $D$, and $F$ partial waves are included to generate the resonant amplitudes. Data of $π^{-}p \to ηn$ reaction from threshold up to a total center-of-mass energy of about 2 GeV are satisfactorily reproduced and the roles played by the following nine nucleon resonances are investigated: $S_{11}(1535)$, $S_{11}(1650)$, $P_{11}(1440)$, $P_{11}(1710)$, $P_{13}(1720)$, $D_{13}(1520)$, $D_{13}(1700)$, $D_{15}(1675)$, and $F_{15}(1680)$. The reaction mechanism as well as the predicted $ηN$ scattering length are discussed.
dc.description22 pages, 8 figures
dc.identifierhttps://arxiv.org/abs/0804.3476
dc.identifierhttp://arxiv.org/abs/0804.3476
dc.identifierPhys.Rev.C78:025204,2008
dc.identifierdoi:10.1103/PhysRevC.78.025204
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/203455
dc.subjectNuclear Theory
dc.titleCoupled-channels study of the $π^{-}p \to ηn$ process
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