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Channel-spin and analyticity of the spectral function

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Il Nuovo Cimento (1955-1965)

Summary

The contribution to the imaginary part of the scattering amplitude from any intermediate state of definite channel-spin (total angular momentum in the centre-of-mass system) is shown to be analytic in the entire complex plane of the momentum-transfer variable.

Riassunto

Si dimostra che il contributo di ogni stato intermedio di spin di canale definito (impulso angolare totale nel sistema del centro di massa) alla parte immaginaria dell’ampiezza di scattering è analitico su tutto il piano complesso della variabile di trasferimento d’impulso.

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References

  1. H. Lehmann:Nuovo Cimento,14, 153 (1959).

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  2. S. S. Schweber:Relativistic Quantum Field Theory (New York, 1961).

  3. F. J. Dyson:Phys. Rev.,110, 1460 (1958).

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Mohan, G. Channel-spin and analyticity of the spectral function. Nuovo Cim 24, 350–352 (1962). https://doi.org/10.1007/BF02745655

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  • DOI: https://doi.org/10.1007/BF02745655

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