Theoretical study on pp --> p n pi+ reaction at medium energies

Details Theoretical study on pp --> p n pi+ reaction at medium energies Theoretical study on pp --> p n pi+ reaction at medium energies

2009-02-11

arxiv.org/abs/0902.1818v1

Int.J.Mod.Phys.E18:281-292,2009

Physics

Nuclear Physics

Nuclear Theory

talk at STORI08, Sept. 2008, Lanzhou, China

Scientific paper

10.1142/S0218301309012306

The $pp\to p n \pi^+$ reaction is a channel with the largest total cross section for pp collision in COSY/CSR energy region. In this work, we investigate individual contributions from various $N^*$ and $\Delta^{*}$ resonances with mass up to about 2 GeV for the $pp\to p n \pi^+$ reaction. We extend a resonance model, which can reproduce the observed total cross section quite well, to give theoretical predictions of various differential cross sections for the present reaction at $T_p=2.88$ GeV. It could serve as a reference for identifying new physics in the future experiments at HIRFL-CSR.

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