Summary
Combining unitarity with the well-known properties of the Herglotz functions an essential improvement on the upper bound of |F(2, 2, 0)| is obtained under the additional assumptionF(4, 2,−2)<0.
Riassunto
Combinando l'unitarietà con le ben note proprietà delle funzioni di Herglotz si ottiene un miglioramento essenziale del limite superiore di |F(2, 2, 0)| con l'ipotesi aggiuntiva cheF(4, 2,−2)<0.
Резюме
Обьединяя унитарность с хорощо известными свойствами функций Герглотца, получается существенное улучшение верхней границы |F(2, 2, 0)| при дополнительном предположенииF(4,2,−2)<0.
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References
L. Łukaszuk andA. Martin:Nuovo Cimento,52 A, 122 (1967).
B. Bonnier andR. Vinh Mau:Phys. Rev.,165, 1923 (1967); cf.A. Common:Nuovo Cimento,63 A, 451 (1969).
R. Wit:Acta Phys. Polon.,24, 271 (1963).
C. J. Goebel andG. Shaw:Phys. Lett.,27 B, 291 (1968).
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Wit, R. Absolute bound on the ππ scattering amplitude. Nuovo Cimento A (1965-1970) 69, 10–14 (1970). https://doi.org/10.1007/BF02728767
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DOI: https://doi.org/10.1007/BF02728767