Differential cross section and analysing power of the pp→{pp}sπ0 reaction at 353 MeV
- Tsirkov, D.
- Azaryan, T.
- Baru, V.
- Chiladze, D.
- Dymov, S.
- Dzyuba, A.
- Gebel, R.
- Goslawski, P.
- Hanhart, C.
- Hartmann, M.
- Kacharava, A.
- Khoukaz, A.
- Komarov, V.
- Kulessa, P.
- Kulikov, A.
- Kurbatov, V.
- Lensky, V.
- Lorentz, B.
- Macharashvili, G.
- Mchedslishvili, D.
- Mielke, M.
- Mikirtytchiants, S.
- Merzliakov, S.
- Nioradze, M.
- Ohm, H.
- Papenbrock, M.
- Rathmann, F.
- Serdyuk, V.
- Shmakova, V.
- Ströher, H.
- Uzikov, Yu.
- Valdau, Yu.
- Wilkin, C.
DOIAbstract
AbstractThe differential cross section dσ/dΩ and analysing power Ay of the p→p→{pp}sπ0 reaction have been measured at COSY-ANKE at 353 MeV. The final proton pair was detected at very low excitation energy, leading to an S-wave diproton, denoted here as {pp}s. The angular dependence of both dσ/dΩ and Ay can be described in terms of s- and d-wave pion production. By using phase information from elastic pp scattering, unique solutions are derived for the corresponding amplitudes only as a result of the combined analysis of both experimental observables. The large d-wave term thus obtained is important for the tests of the current state-of-the-art chiral perturbation theory approach. The amplitudes will also help towards determining the isospin...
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