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Shadow model for the high-energy pion-proton elastic backward peak

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Il Nuovo Cimento A (1965-1970)

Summary

We propose a model in which the elastic backward peak for high-energy pion-nucleon scattering is explained as the shadow of the production processes. The small height of the backward peak as compared to that of the forward one is due to the forward-backward asymmetries in the angular distributions of the secondaries in πp collisions. The application of the model to π+p scattering at 8 GeV/c gives the right order of magnitude for the height of the backward peak and a width approximately equal to that of the forward one.

Riassunto

Si propone un modello in cui il picco elastico all'indietro nella diffusione pione-nucleone ad alta energia è dovuto all'ombra dei processi di produzione. Il piccolo valore della sezione d'urto all'indietro in confronto con la sezione d'urto in avanti è dovuto alle asimmetrie avanti-indietro delle distribuzioni angolari dei secondari prodotti negli urti pione-nucleone. L'applicazione del modello all'urto π+p a 8 GeV/c fornisce il corretto ordine di grandezza per l'altezza del picco all'indietro ed una larghezza all'incirca uguale a quella del picco in avanti.

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Authors and Affiliations

  1. CERN, Geneva

    L. Bertocchi & A. Capella

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  1. L. Bertocchi
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  2. A. Capella
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Bertocchi, L., Capella, A. Shadow model for the high-energy pion-proton elastic backward peak. Nuovo Cimento A (1965-1970) 44, 1194–1209 (1966). https://doi.org/10.1007/BF02719359

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  • DOI: https://doi.org/10.1007/BF02719359

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