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

HADES collaboration (99 authors); Blanco, A.; Fonte, P.; Lopes, L.; Mangiarotti, A.

http://hdl.handle.net/10400.26/27314

Use this identifier to reference this record.

Name:	Description:	Size:	Format:
1.pdf		440.6 KB	Adobe PDF	Download

Send Feedback

Authors

HADES collaboration (99 authors)

Abstract(s)

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.