Summary
A double nucleon exchange model is proposed for the ABC production in the pn → d(ππ)0 reaction. Important low-mass enhancements are obtained in the invariant ππ mass spectrum similarly to what happens in a Deck model. The same type of mechanism also provides an explanation for the experimentally observed peak at the highest invariant ππ masses.
Riassunto
Si propone un modello di scambio di due nucleoni per la produzione di ABC nella reazione pn → d(ππ)0. Si ottengono importanti aumenti di piccola massa nello spettro di massa ππ invariante analogamente a quello che avviene in un modello di Deck. Lo stesso tipo di meccanismo fornisce anche una spiegazione per il picco osservato sperimentalmente alle maggiori masse invarianti di ππ.
Реэюме
Предлагается модель с двойным нуклонным обменом для « АВС » рождения в реакции pn → d(ππ)0. В спектре инвариантной ππ массы обнаружены важные пики при малых массах, аналогично тому, что происходит в модели Декка. Укаэанный механиэм также общясняет зкспериментально обнаруженный пик при больщих инвариантных ππ массах.
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Grant from C.A.P.E.S. (Brazil); Laboratoire de Physique Corpusculaire de l’Université de Caen.
Attaché de Recherche au CNRS.
Grant from Comissão Nacional de Energia Nuclear (C.N.E.N.).
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Anjos, J.C., Levy, D. & Santoro, A. A double nucleon exchange model for the « ABC » production in the pn → d (ππ)0 reaction. Nuov Cim A 33, 23–46 (1976). https://doi.org/10.1007/BF02748683
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DOI: https://doi.org/10.1007/BF02748683