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

G Agakishiev,M Böhmer,J Friese,A Krása,J C Berger-Chen,T Heinz,E Schwab,I Iori,L Fabbietti,J A Garzón,K Göbel,Y Zanevsky,A Schmah,J Siebenson,J Pietraszko,H Ströbele,J Stroth,I Fröhlich,J Michel,W Przygoda,B Ramstein,A Tarantola,A Kurepin,A Belyaev,P Cabanelas,S Spataro,G Kornakov,M Gumberidze,M Traxler,L Naumann,V Metag,O Fateev,D D,K Lapidus,L Maier,T Hennino,V A Nikonov,H Kuc,A Mangiarotti,A Lebedev,J Markert,P Finocchiaro,M Lorenz,T Galatyuk,B Spruck,T Karavicheva,C Müntz,D Belver,B Michalska,A Rustamov,W Koenig,M Golubeva,B Kämpfer,A Blanco,T Vasiliev,R Gernhäuser,O Pechenova,J L Boyard,A Sadovsky,C Wendisch,K Teilab,B W Kolb,A Ivashkin,A Ierusalimov,A Reshetin,R Holzmann,S Lang,T Liu,L Lopes,S Chernenko,Y Parpottas,V Pechenov,W Kühn,E Epple,R Krücken,M Weber,F Guber,H Tsertos,A Dybczak,P Fonte,R Lalik,V Wagner,P Salabura,S Yurevich,Yu G Sobolev,C Sturm,J Wüstenfeld,M Pałka ,V P Ladygin ,F Křížek ,A Bałanda ,M Jurkovič ,I Köenig ,Y Pachmayer ,A Sarantsev ,R Trębacz ,R Kötte ,Robert Helmut Münzer ,P Tlustý ,А Куглер

doi:10.1140/epja/i2015-15137-5

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

G Agakishiev, M Böhmer + Show 98 more

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https://doi.org/10.1140/epja/i2015-15137-5

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Journal: The European Physical Journal A	Publication Date: Oct 1, 2015
Citations: 20

Affiliation: Technical University of Munich, Czech Academy of Sciences, National Institute for Nuclear Physics, Goethe University Frankfurt, University of Paris-Saclay, University of Turin, Technical University of Darmstadt, Helmholtz-Zentrum Dresden-Rossendorf, University of Giessen, University of Bonn, Jagiellonian University, Joint Institute for Nuclear Research, Russian Academy of Sciences, TU Dresden, University of Cyprus

#Production In Proton-proton Collisions #Baryon Resonance Production + Show 8 more

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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.

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