Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV
Keywords
baryon resonance: production | resonance: model | p p: inelastic scattering | nucleon resonance: decay | pi: hadroproduction | electron: pair production | angular distribution | mass spectrum | saturation | HADES | omega(783): intermediate state | experimental results | Darmstadt SIS | p p --> n p pi_s16 | p p --> 2p pi0 | p p --> 2p positron electron | 3.5 GeV-kin
Abstract
We report on baryon resonance production and decay in proton-proton collisions at a kinetic energy of 3.5 GeV based on data measured with HADES. The exclusive channels pp_s13_s178594_s19np_s13_s17960_s19_s16 and pp_s13_s178594_s19pp_s13_s17960_s190 as well as pp_s13_s178594_s19ppe_s16e_s13_s178722_s19 are studied simultaneously for the first time. The invariant masses and angular distributions of the pion-nucleon systems were studied and compared to simulations based on a resonance model ansatz assuming saturation of the pion production by an incoherent sum of baryonic resonances (R) with masses
