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Positivity of the real part of the forward scattering amplitude

We prove the general theorem that the real part of the crossing even forward two-body scattering amplitude is positive at sufficiently high energies if, above a certain energy, the total cross section increases monotonically to infinity at infinite energy.

Detalles Bibliográficos
Autores principales: Martin, André, Wu, Tai Tsun
Lenguaje:eng
Publicado: 2017
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.97.014011
http://cds.cern.ch/record/2281443
Descripción
Sumario:We prove the general theorem that the real part of the crossing even forward two-body scattering amplitude is positive at sufficiently high energies if, above a certain energy, the total cross section increases monotonically to infinity at infinite energy.