Note on the nonleptonic hyperon decays in SU(3)

Journal Article · Wed Aug 01 04:00:00 EDT 1979 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.20.810· OSTI ID:6247267

Verma, R C; Khanna, M P; Gupta, M

Using an s-u-channel--symmetric weak Hamiltonian (8 direct-sum 27) and assuming intermediate states to be nonexotic, we obtain most of the observed features, such as the ..delta..I = 1/2 rule and the Lee-Sugawara sum rule, for parity-violating (pv) as well as parity-conserving (pc) decays of (1/2)/sup +/ hyperons. In addition two sum rules summation/sub +//sup +/ = 0 and ..sqrt..2 summation/sub +//sup +/ - summation/sub 0//sup +/ = ..sqrt..3 ..lambda../sub -//sup 0/ in pv and pc modes, respectively, are also obtained, which are well satisfied experimentally. For ..cap omega../sup -/ ..-->.. ..xi.. + ..pi.. decays, however, the ..delta..I = 1/2 rule does not follow. Recent CERN data on this mode do indicate about 20% violation of the ..delta..I = 1/2 rule.

• Research Organization: Department of Physics, Panjab University, Chandigarh-160014, India
• OSTI ID: 6247267
• Journal Information: Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 20:3; 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
DECAY
DUALITY
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
HADRONS
HAMILTONIANS
HYPERONS
INVARIANCE PRINCIPLES
ISOSPIN
LIE GROUPS
MATHEMATICAL OPERATORS
MATRIX ELEMENTS
P INVARIANCE
PARTICLE DECAY
PARTICLE PROPERTIES
QUANTUM OPERATORS
S CHANNEL
SELECTION RULES
STRANGE PARTICLES
SU GROUPS
SU-3 GROUPS
SUM RULES
SYMMETRY GROUPS
U CHANNEL
WEAK HADRONIC DECAY
WEAK PARTICLE DECAY