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Zeros in ππ amplitudes

Нули в ππ амплитудах

  • Published:
Il Nuovo Cimento A (1965-1970)

Summary

We show that the zeros which must exist in the physical ππ amplitudes are those implied by the Adler self-consistency condition, even if this condition is not explicitly imposed. This allows us to explain why all low-energy ππ models obtain approximately the same values for thes-wave scattering lengths.

Riassunto

Si dimostra che gli zeri che debbono esistere nelle ampiezze fisiche ππ sono quelli implicati dalla condizione di autocoerenza di Adler, anche se questa condizione non è esplicitamente imposta. Ciò ci permette di spiegare perché tutti i modelli ππ di bassa energia danno approssimativamente gli stessi valori per le lunghezze di scattering di ondas.

Резюме

Мы показываем, что нули, которые должны существовать в физических ππ амплитудах, представляют именно те нули, которые являются следствием условия само-сорласованности Адлера, даже если зто условие не наложено в явном виде. Это позволяет нам обьяснитй, почему все ππ модели при низких знергиях дают приблизителйно одинаковые значения для длинs-волнового рассеяния.

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Pennington, M.R., Pond, P. Zeros in ππ amplitudes. Nuov Cim A 3, 548–560 (1971). https://doi.org/10.1007/BF02823325

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  • DOI: https://doi.org/10.1007/BF02823325

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