Analysis of pion production data measured by HADES in proton-proton collisions at 1.25 GeV

Abstract

Baryon resonance production in proton-proton collisions at a kinetic beam energy of 1.25 GeV is investigated. The multi-differential data were measured by the HADES collaboration. Exclusive channels with one pion in the final state ($np{\pi }^{+}$ and $pp{\pi }^0$) 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 $\Delta$(1232), yet with a sizable impact of the $N$(1440) and non-resonant partial waves.

arXiv comment12 pages, 6 figures

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Cited by in corpus (7)

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• Production and electromagnetic decay of hyperons: a feasibility study with HADES as a Phase-0 experiment at FAIR
• Covariant model for the Dalitz decay of the $N(1535)$ resonance
• Analysis of the exclusive final state npe${}^{+}$e${}^{-}$ in quasi-free np reaction
• Correlated pion-proton pair emission off hot and dense QCD matter
• Study of the proton-proton collisions at 1683 MeV/c