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- W2581121383 abstract "The coupled channels Lagrangian approach of the Giessen model (GiM) for meson production on the nucleon is discussed and applied to a selected set of meson production channels on the nucleon, ranging from πN → πN and γ N → π N , eta-production and associated strangeness production to 2π N channels in the resonance energy region. We present an updated coupled-channel analysis of eta-meson production including all recent photoproduction data on the proton. The dip structure observed in the differential cross sections at c.m. energies W=1.68 GeV is explained by destructive interference between the S 11 (1535) and S 11 (1560) states, not confirming the postulated sharp state. Kaon production on the nucleon is investigated in K Λ and K Σ exit channels. The approach to 2π N production has been significantly improved by using the isobar approximation with σN and π Δ1232 intermediate states. Three-body unitarity is maintained up to interference between the isobar subchannels. We obtain R σ N (1440)=27+4 -9 % and R π Δ (1440)=12+5 -3 % for the for the σ N and π Δ1232 decay branching ratios of N *(1440) respectively. The extracted π N inelasticities and reaction amplitudes are consistent with the results of other groups." @default.
- W2581121383 created "2017-02-03" @default.
- W2581121383 creator A5079810096 @default.
- W2581121383 date "2017-01-01" @default.
- W2581121383 modified "2023-09-26" @default.
- W2581121383 title "Coupled channels approach to photo-meson production on the nucleon" @default.
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- W2581121383 doi "https://doi.org/10.1051/epjconf/201713403006" @default.
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