Summary
16 000 two-prong events in π+p interactions at 2.75 GeV/o in the Saclay HBC 81 cm irradiated at C.E.R.N., were analysed. Results concerning ρ+ production in reactions π+p→ pρ+ (σ=(0.89±0.10) mb) and π+π+ system in reaction π+p → nπ+π+ are presented. For these reactions the O.P.E. model is dominant. These shift analyses of π+π+ (T=2) scattering have been performed and contributions ofS andD waves studied as functions of the di-pion mass.
Riassunto
Si danno risultati riguardanti la produzione della risonanza ρ+ nella reazione π++p→ pρ+ σ=(0.89±0.10) rnb e lo studio del sistema π+π+ nella reazione π+P → nπ+π. I risultati si basano sull’analisi di 16 000 eventi a due rarai osservati su film della camera a bolle a H2 di 8 cm di Saclay esposta ad un fascio di π+ di 2.75 GeV/c al C.E.R.N. In particolare si fà un’analisi in fase dello scattering π+π+ (T=2) in differenti regioni di massa del dipione valutando il oontributo delie ondeS e D.
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Saclay-Orsat-Bari-Bologna Collaboration., Armenise, N., Ghidini, B. et al. π-π interactions in π+p → ππ Reactions at 2.75 GeV/c. Nuovo Cim 37, 361–375 (1965). https://doi.org/10.1007/BF02749838
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DOI: https://doi.org/10.1007/BF02749838