Production Mechanisms and Relations between Spin Density Matrix Elements
- 25 June 1968
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 170 (5), 1569-1577
- https://doi.org/10.1103/physrev.170.1569
Abstract
The spin structure of amplitudes for the production of a single baryon or meson resonance of arbitrary spin in a quasi-two-body final state has been investigated. If the dominant mechanism is the exchange of a single set of quantum numbers in the crossed channel, the spin density matrix elements are shown to satisfy bilinear relations. Typical relations are for baryon production, and for meson production. It is suggested that the use of these relations in the analysis of data is a good test for the presence of two or more exchange contributions. The relations are used to analyze vector- and tensor-meson production from and initial states, and production from and initial states. Two of the most interesting results concern production. We find that the small-angle data on cannot be dominated by exchange alone, and analysis of the data on at indicates the existence of contributions in addition to exchange.
Keywords
This publication has 13 references indexed in Scilit:
- Investigation of the Pion Trajectory in a Regge-Pole ModelPhysical Review B, 1968
- Regge Poles in Resonance ProductionPhysical Review B, 1967
- Meson + Hyperon Final States inInteractions at 4.1 and 5.5 GeV/cPhysical Review Letters, 1967
- Proton-Proton Interactions at 5.5 GeV/cPhysical Review B, 1967
- Regge Poles and Unequal-Mass Scattering ProcessesPhysical Review B, 1967
- Study of theππS-Wave Phase Shift in theρRegion Taking into Account Absorption EffectsPhysical Review Letters, 1967
- Production and decay of vector mesons at high energyIl Nuovo Cimento A (1971-1996), 1966
- Regge-Pole Analysis ofπ++n→ω+pPhysical Review Letters, 1966
- On the connection between production mechanism and decay of resonances at high energiesIl Nuovo Cimento (1869-1876), 1964
- On the general theory of collisions for particles with spinAnnals of Physics, 1959