Summary
The distribution of certain kinematic quantities defined in the decay5HeΛ → π− + p +4He are interpreted as being due to the presence of a strong final state interaction. In particular the data are discussed with reference to two simple theories, one of which takes into account the specific p-4He nuclear interaction. The experimental evidence, although not conclusive, is consistent with the expectation that the p-4Hep 3/2 resonance plays an important role in determining the final state configurations.
Riassunto
Si interpretano le distribuzioni di alcune quantità cinematiche, definite nel decadimento5HeΛ → π− + p +4He, come dovute ad una forte interazione negli stati finali. In particolare si discutono i risultati sperimentali in relazione a due semplici modelli teorici, uno dei quali si basa sulla specifica interazione nucleare p-4He. I dati sperimentali, sebbene in forma non conclusiva, favoriscono l’ipotesi che le configurazioni negli stati finali siano determinate in modo dominante dalla risonanzap 3/2 del sistema p-4He.
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References
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It has been shown byBrown et al. (6) that the parameterE rel (orP π) is rather insensitive to the presence of final state interaction.
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Research supported by the U.S. Air Force Office of Scientific Research, Contract no. AF 49(638)-209.
Research supported by the National Science Foundation and by the U. S. Atomic Energy Commission through Argonne National Laboratory subcontract.
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Ammar, R., Levi Setti, R., Slater, W.E. et al. Final state interaction in5HeΛ decay. Nuovo Cim 13, 1156–1164 (1959). https://doi.org/10.1007/BF02725126
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DOI: https://doi.org/10.1007/BF02725126