Abstract
Baryon resonance production in proton-proton collisions at a kinetic beam energy of 1.25GeV is investigated. The multi-differential data were measured by the HADES Collaboration. Exclusive channels with one pion in the final state (npπ + and ppπ 0 were put to extended studies based on various observables in the framework of a one-pion exchange model and with solutions obtained within the framework of a partial wave analysis (PWA) of the Bonn-Gatchina group. The results of the PWA confirm the dominant contribution of the Δ(1232), yet with a sizable impact of the N (1440) and non-resonant partial waves.
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Communicated by Z.-E. Meziani
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HADES Collaboration., Agakishiev, G., Balanda, A. et al. Analysis of pion production data measured by HADES in proton-proton collisions at 1.25 GeV. Eur. Phys. J. A 51, 137 (2015). https://doi.org/10.1140/epja/i2015-15137-5
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DOI: https://doi.org/10.1140/epja/i2015-15137-5