Strong Decays of Higher Baryons in a Quark Model
Abstract
An SU(6)×O(3) model of baryons, which had earlier been used by Mitra and Ross for the evaluation of the strong decay widths of negative parity (70,1-) baryons, is now extended to higher-lying baryonic states assumed to belong to the (56,2+) and (70,3-) representations, as Regge recurrences of the supermultiplets (56,0+) and (70,1-), respectively. Four different classes of supermultiplet transitions are examined. For the transitions (56,2+) --> (56,0+), the results are in broad agreement with experiment, as well as those of SU(6)W and previous quark-model calculations. For the transitions (56,2+) --> (56,2+) and (56,2+) --> (70,1-), appreciable widths are predicted for several experimentally observable states, the first type being geometrically related to the N*Nπ coupling constant, and the second type being shown to involve a symmetry transition of only one unit (from symmetric to mixed symmetric wave functions). Results are also given for transitions from (70,3-) states.
- Publication:
-
Physical Review
- Pub Date:
- May 1968
- DOI:
- 10.1103/PhysRev.169.1322
- Bibcode:
- 1968PhRv..169.1322K