Nonleptonic weak decay and the Melosh transformation
Creators
- 1. Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48104
Description
The PCAC (partially conserved axial-vector current) hypothesis and the Melosh transformation are used with the soft-pion and infinite-momentum techniques to obtain expressions for the nonleptonic weak decay of amplitudes of the SU(6)/sub W/ 56, L = 0 baryons. The following results are obtained: (1) Modified Lee--Sugawara relations are exact for both the parity-violating and parity-conserving amplitudes. (2) Two additional sum rules involving Ω- decay amplitudes are derived. (3) If the parity-violating part of the weak decay Hamiltonian transforms only as an SU(6)/sub W/ 35, then A(Σ+/sub +/) = 0 automatically. (4) Terms arising from the Melosh transformation are necessary to bring the decay width for Ω- → Ψπ into agreement with experiment. (5) All known amplitudes are fitted to within 10%
Additional details
Publishing Information
- Journal Title
- Phys. Rev., D
- Journal Volume
- 12
- Journal Issue
- 11
- Series
- Phys. Rev., D.
- Journal Page Range
- 3711-3729
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 7250362
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- BARYONS; DECAY; DECAY AMPLITUDES; MELOSH TRANSFORMATION; OMEGA-MINUS; P INVARIANCE; PCAC THEORY; PIONS; SU-6 GROUPS; SUM RULES; WEAK INTERACTIONS; XI PARTICLES
- Descriptors DEC
- AMPLITUDES; BASIC INTERACTIONS; BOSONS; ELEMENTARY PARTICLES; EQUATIONS; FERMIONS; HADRONS; HYPERONS; INTERACTIONS; INVARIANCE PRINCIPLES; LIE GROUPS; MESONS; OMEGA PARTICLES; PSEUDOSCALAR MESONS; STRANGE PARTICLES; SU GROUPS; SYMMETRY GROUPS; TRANSITION AMPLITUDES