Summary
The predictions of the model of Lindenbaum and Sternheimer are compared with results obtained from the analysis of the reactions π−+p → π−+π++n; π−+p → π−+π0+p, observed in an H2 bubble chamber. It was not possible to find any contradiction and all results concerning momentum spectra and branching ratios are sufficiently well described by the model. In the favorable case: π−+p → π++I− → → π++(π−+n), the correctQ-value distribution for the isobar is obtained and angular correlations in its decay are compatible with aJ=3/2 for the (π−+n)-pair.
Riassunto
Si confrontano le previsioni del modello di Lindenbaum e Sternheimer con i risul — tati ottenuti dall’analisi delle reazioni π−+p → π−+π++n; π−+p → π−+π0+p, osservate in una camera a bolle ad idrogeno. I risultati sperimentali non sono in contraddizione con il modello e sono da esso descritti sufficientemente bene. Nel caso favorevole π−+p → π++I− → π++(π−+n) il modello dà la distribuzione corretta dei valori diQ e le correlazioni angolari nel decadimento sono compatibili con unJ=3/2 per le coppie (π−+n).
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Alles-Borelli, V., Bergia, S., Perez Ferreira, E. et al. Experimental results on pion production compared with predictions of the isobar model. Nuovo Cim 14, 211–224 (1959). https://doi.org/10.1007/BF02725019
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DOI: https://doi.org/10.1007/BF02725019