Summary
It is shown, by rigorous methods, that for potentialsV(z) holomorphio in the right half-plane, bounded byC|z; | -1-α [0 < α< 1] the Regge poles for Re v>>0 and -(π/2 - Arg v)< Arg k< + π/2 are confined to simple and small domains. IfV(z) is bounded by G|z|-1- {α} exp [-μ Rez] then even fork → + 0, the Regge poles remain confined in a domain which is bounded to the right and which is asymptotic to the imaginary axis in thev plane.
Riassunto
Si dimostra, con metodi rigorosi, che per potenzialiV(z) olomorfi nel semipiano destro, limitati da C|Z|−1−α[0<α<1], i poli di Regge, per Rev 0 e (π/2-Arg v) < Arg k< + π/2, sono confinati in domini semplici e ristretti. SeV(z) è limitato daCZ -1-αexp[μ Re z], allora, anche perk→ + 0, i poli di Eegge rimangono confinati in un determinate) limite a destra ed asintotieo rispetto all’asse immaginario nel pianov.
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References
A. Martin:On the behaviour of the partialwave amplitudes for large angular momenti in potential scattering. Preprint CERN.
J. Heading:An Introduction to PhaseIntegral Methods (New York, 1962), p. 32.
E. C. Titchmarsch:Eigenfunction Expansions (Oxford, 1946), p. 97.
T. Regge:Mathematical Theory of Potential Scattering in Lectures on High-Energy Physics (Hercegnovi, 1961), p. 47.
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Bessis, D. Localization of regge poles in potential scattering. Nuovo Cim 33, 797–808 (1964). https://doi.org/10.1007/BF02749896
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DOI: https://doi.org/10.1007/BF02749896