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Coupled-channels study of the π − p → ηn process

By J. Dur, B. Juliá-díaz, T. -s. H. Lee, B. Saghai and T. Sato


The reaction π−p → 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, π∆, 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 → 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

Year: 2008
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