Restrictions Imposed by the Optical Theorem on Exchanged Quantum Numbers
- 22 June 1964
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 134 (6B), B1365-B1367
- https://doi.org/10.1103/physrev.134.b1365
Abstract
Crossing relations for particles of arbitrary spin are used to express the amplitudes for in terms of amplitudes for the crossed reaction . Using the optical theorem, it is demonstrated that crossed amplitudes with positive parity, positive parity, and positive signature cannot be negligible for forward scattering. Implications of this result for the spin dependences of high-energy scattering amplitudes are discussed.
Keywords
This publication has 4 references indexed in Scilit:
- Crossing relations for helicity amplitudesAnnals of Physics, 1964
- Exchange contributions to high energy scattering and imaginary character of the elastic amplitudePhysics Letters, 1963
- Isotopic Spin of Exchanged SystemsPhysical Review B, 1963
- On the general theory of collisions for particles with spinAnnals of Physics, 1959