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The closed galaxy model, particle production mechanisms and the effects of scaling violation on π/p ratio

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Il Nuovo Cimento C

Summary

We present here an analysis of the nature of the problematical π/p ratio on the basis of the modified (or revised) closed galaxy model (MCGM) and the two forms of scaling violation effect one of which is called the model with moderate violation of Feynman scaling and the other called model with stronger violation of Feynman scaling at very high energies. Using both the JACEE and the non-JACEE forms of primary nucleon spectra, the theoretical values obtained with these two types of scaling violation forms and the modified closed galaxy model are always greater than experimental measurements, especially at low energies. Attempts to account for these discrepancies have also been made.

Riassunto

Si presenta qui un'analisi della natura del rapporto problematico π/p sulla base del modello della galassia chiusa modificato (o rivisto) (MCGM) e sulle due forme dell'effetto di violazione di scala di cui uno è chiamato il modello con violazione moderata della scala di Feynman e l'altro con violazione più forte della scala di Feynman ad energie molto alte. Usando sia le forme di JACEE e non degli spettri dei nucleoni primari, i valori teorici ottenuti con questi due tipi di forme di violazione di scala e il modello della galassia chiusa modificato sono sempre maggiori delle misure sperimentali, specialmente ad energie basse. Si sono anche effettuati tentativi per spiegare queste discordanze.

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Bhattacharyya, S. The closed galaxy model, particle production mechanisms and the effects of scaling violation on π/p ratio. Il Nuovo Cimento C 11, 429–436 (1988). https://doi.org/10.1007/BF02533135

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  • DOI: https://doi.org/10.1007/BF02533135

PACS 94.40

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