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Off-mass-shell effects in deuteron break-up by pions at low energies

Влияние области вне массовой поверхности при диссоциации дейтрона пионами при малых знергиях

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Il Nuovo Cimento A (1965-1970)

Summary

The πd → πpn differential cross-section near the 33 resonance is calculated considering the Fermi motion of the nucleons inside the deuteron and the off-mass-shell effect. The off-mass-shell extension of the π

amplitude is made using a separable potential model. A comparison with experimental data is presented, with a brief discussion.

Riassunto

Si calcola la sezione d’urto differenziale πd → πpn nei pressi della risonanza 33 tenendo conto del moto di Fermi dei nucleoni nel deutone e degli effetti esterni allo strato delle masse. Si determina l’estensione fuori dello strato delle masse dell’ampiezza π

usando un modello a potenziali separabili. Si presenta un confronto con dati sperimentali con una breve discussione.

Реэюме

Вычисляется дифференциальное поперечное сечение процесса лd → лрп вблиэи 33 реэонанса, рассматривая движение Ферми нуклонов внутри дейтрона и учитывая влияние области вне массовой поверхности. Испольэуя модель раэделяемого потенциала, проводится продолжение π

амплитуды на область вне массовой поверхности. Проводится сравнение с зкспериментальными данными.

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Author notes

  1. L. P. Rosa (Fellows of Conselho Nacional de Pesquisas) & Z. D. Thomé (Fellows of Conselho Nacional de Pesquisas)

    Present address: Instituto de Física and COPPE, Universidade Federal do Rio de Janeiro, Brazil

Authors and Affiliations

  1. Pontifícia Universidade Católica, Rio de Janeiro

    E. M. Ferreira

  2. International Centre for Theoretical Physics, Trieste

    L. P. Rosa (Fellows of Conselho Nacional de Pesquisas) & Z. D. Thomé (Fellows of Conselho Nacional de Pesquisas)

Authors
  1. E. M. Ferreira
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  2. L. P. Rosa
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  3. Z. D. Thomé
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Ferreira, E.M., Rosa, L.P. & Thomé, Z.D. Off-mass-shell effects in deuteron break-up by pions at low energies. Nuov Cim A 21, 187–196 (1974). https://doi.org/10.1007/BF02731192

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  • DOI: https://doi.org/10.1007/BF02731192

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