| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8191259 | Physics Letters B | 2012 | 7 Pages |
Abstract
The reaction ppâppÏ0Ï0 has been investigated at a beam energy of 1.4 GeV using the WASA-at-COSY facility. The total cross section is found to be (324±21systematic±58normalization)μb. In order to study the production mechanism, differential kinematic distributions have been evaluated. The differential distributions indicate that both initial state protons are excited into intermediate Î(1232) resonances, each decaying into a proton and a single pion, thereby producing the pion pair in the final state. No significant contribution of the Roper resonance Nâ(1440) via its decay into a proton and two pions is found.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
The WASA-at-COSY Collaboration The WASA-at-COSY Collaboration, P. Adlarson, C. Adolph, W. Augustyniak, M. Bashkanov, T. Bednarski, F.S. Bergmann, M. BerÅowski, H. Bhatt, K.-T. Brinkmann, M. Büscher, H. Calén, H. Clement, D. Coderre, E. CzerwiÅski,