Nonleptonic decays of chiral solitons and a possible resolution of the S-wave/P-wave puzzle

Journal Article · Tue Oct 01 04:00:00 EDT 1985 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.32.1733· OSTI ID:5371902

Donoghue, J F; Golowich, E; Lin, Y R

We calculate the nonleptonic weak decays of hyperons in the Skyrmion model of baryons. The weak-interaction chiral Lagrangian is that known from kaon decay, providing a zero-parameter description of the decay amplitudes. In the S waves the PCAC (partially conserved axial-vector current) relation is verified, but the magnitude emerges as a factor of 3 too small, probably indicating a slow convergence of the chiral expansion. In the P waves, new and important terms are found which are not included in standard analyses. These modify the PCAC treatment of hyperon decay and can provide the resolution of the long-standing S-wave/P-wave puzzle.

• Research Organization: Department of Physics and Astronomy, University of Massachusetts, Amherst, Massachusetts 01003
• OSTI ID: 5371902
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 32:7; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645203* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BASIC INTERACTIONS
CHIRALITY
COMPOSITE MODELS
DALITZ PLOT
DECAY
DIAGRAMS
ELEMENTARY PARTICLES
FERMIONS
FUNCTIONS
HADRONS
HYPERONS
INTERACTIONS
LAGRANGIAN FUNCTION
LIE GROUPS
MATHEMATICAL MODELS
P WAVES
PARTIAL WAVES
PARTICLE DECAY
PARTICLE MODELS
PARTICLE PROPERTIES
PCAC THEORY
QUARK MODEL
QUASI PARTICLES
S WAVES
SCATTERPLOTS
SOLITONS
STRANGE PARTICLES
STRONG INTERACTIONS
SU GROUPS
SU-2 GROUPS
SU-3 GROUPS
SYMMETRY GROUPS
WEAK HADRONIC DECAY
WEAK PARTICLE DECAY