Exchange of Even- and Odd-Parity Baryon-Meson Resonances and Backward Elastic Scattering
Abstract
If there are two meson-baryon resonances or bound states with opposite parities but with the same remaining internal quantum numbers including signature, one at c.m. energy W1 with l=J-12 and the other at W2 with l=J+12, then the residue of the Regge trajectory on which they lie must change sign between W1 and -W2. Consequences of the exchange of such a trajectory to backward elastic scattering are discussed.
- Publication:
-
Physical Review Letters
- Pub Date:
- August 1966
- DOI:
- 10.1103/PhysRevLett.17.498
- Bibcode:
- 1966PhRvL..17..498D