Summary
We report on the calculations we have done on the reaction π+p → ωN *++, followed by the decays ω →π +π0π− andN *++ρπ+p, using the model of Gottfried and Jackson in which the one-meson-exchange model, in this case ρ-exchange, is modified to take into account absorption in the initial and final state due to competition from other open channels. It is shown that the suppression of the low partial waves introduced by this model changes the predicted decay distributions significantly to be in rough agreement with the experimental data.
Rassunto
Si riferiscono i calcoli fatti per la reazione π+p→ωN*++, seguita dai decadimenti Δ → π+π0π− e N*++ → π+p, usando il modello di Gottfried e Jackson in oui il modello a scarobio di un mesone, in questo caso scambio di ρ, è modiûcato per tener conto delrassorbiraento negli stati iniziale e finale dovuti alla concorrenza di altri canali aperti. Si dimostra che la soppressione delle onde parziali basse introdotta da questo modello modiflca in modo signiflcativo le distribuzioni di deoadimento predette in modo che siano in grossolano accordo con i dati sperimentali.
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Svensson, B.E.Y. Absorptive effects in peripheral production processes: The reaction π+p →ωN *++ . Nuovo Cim 37, 714–725 (1965). https://doi.org/10.1007/BF02749867
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DOI: https://doi.org/10.1007/BF02749867