Year: 2003
Type: article
Abstract: Exclusive measurements of the $p\stackrel{\ensuremath{\rightarrow}}{p}\mathrm{pp}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ reaction have been carried out at ${T}_{p}=775\mathrm{MeV}$ at CELSIUS using the PROMICE/WASA setup. Together with data obtained at lower energy, they point to a dominance of the Roper excitation in this process. From the observed interference of its decay routes ${N}^{*}\ensuremath{\rightarrow}N\ensuremath{\sigma}$ and ${N}^{*}\ensuremath{\rightarrow}\ensuremath{\Delta}\stackrel{\ensuremath{\rightarrow}}{\ensuremath{\pi}}N\ensuremath{\sigma},$ their energy-dependent relative branching ratio is determined.
Source: Physical Review C
Authors: J. Pätzold, M. Bashkanov, R. Bilger, W. Brodowski, H. Calén, H. Clement, C. Ekström, K. Fransson, J. Greiff, S. Häggström, B. Höistad, J. Johanson, A. Johansson, T. Johansson, K. Kilian, S. Kullander, A. Kupść, P. Marciniewski, B. Morosov, W. Oelert, R. J. M. Y. Ruber, M. Schepkin, W. Scobel, J. Stepaniak, A. Sukhanov, A. Turowiecki, G. J. Wagner, Z. Wilhelmi, J. Zabierowski, J. Zlomanczuk
Language: Latvian
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1852937337