Methods for Constructing Invariant Amplitudes Free from Kinematic Singularities and Zeros
- 25 May 1967
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 157 (5), 1493-1502
- https://doi.org/10.1103/physrev.157.1493
Abstract
The work of Hara and Wang on the kinematic singularities of helicity amplitudes for particles with spin is extended to rederive the invariant amplitudes given by Hepp and Williams. Parity-conserving invariant amplitudes are given for reactions in which at most two particles have spin.Keywords
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