Analytic Properties of Current-Algebra Vertex Functions
- Author(s): Bander, Myron
- et al.
Published Web Locationhttps://doi.org/10.1103/physrev.173.1568
An expansion of the vector-current vertex is obtained in terms of the Joos spinor amplitudes. As these are free of kinematic singularities, one can remove them from the vertex that enters into the algebra-of-currents sum rules. If one assumes unsubtracted dispersion relations for the resulting form factors, then the sum rules can be cast into a form which involves Bessel transforms of these form factors. © 1968 The American Physical Society.