Nonleptonic charmed-baryon decays: B sub c r arrow B (3/2 sup + , decuplet)+ P (0 sup minus ) or V (1 sup minus )

Journal Article · Sun Nov 01 04:00:00 EST 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.46.3836· OSTI ID:7197462

Xu, Q P; Kamal, A N ^[1]

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1. Theoretical Physics Institute and Department of Physics, University of Alberta, Edmonton, Alberta, T6G 2J1 (Canada)

In contrast to the nonleptonic decays of charmed baryons {ital B}{sub {ital c}}{r arrow}{ital B}(1/2{sup +})+{ital P}(0{sup {minus}}), where the decay amplitude receives contributions both from the {ital s}-channel and {ital u}-channel {ital J}{sup {ital P}}=1/2{sup {plus minus}} poles and from the factorization term, the Cabibbo-favored decays {ital B}{sub {ital c}}{r arrow}{ital B}(3/2{sup +}, decuplet)+{ital P}(0{sup {minus}}) or {ital V}(1{sup {minus}}) are much simpler to describe. In general, one finds that either the pole term (we confine ourselves to 1/2{sup {plus minus}} poles only) or the factorization term contributes, but not both. In this paper we have considered the Cabibbo-favored decays of {Lambda}{sub {ital c}}{sup +},{Xi}{sub {ital c}}{sup 0{ital A}},{Xi}{sub {ital c}}{sup +{ital A}}, and {Omega}{sub {ital c}}{sup 0}. In the model where only 1/2{sup {plus minus}} poles are kept, we find that {Lambda}{sub {ital c}}{sup +} and {Xi}{sub {ital c}}{sup 0{ital A}} decays receive contributions from {ital s}-channel poles only and that {Omega}{sub {ital c}}{sup 0} decays into {ital B}(3/2{sup +}, decuplet)+{ital P}(0{sup {minus}}) or {ital V}(1{sup {minus}}) through the factorization process only. {Xi}{sub {ital c}}{sup +{ital A}} decays are forbidden. We make numerical estimates of decay rates and the asymmetry parameters. We emphasize that the decays {ital B}{sub {ital c}}{r arrow}{ital B}(3/2{sup +}, decuplet)+{ital P}(0{sup {minus}}) or {ital V}(1{sup {minus}}) are theoretically clean'' and simple to describe and that data in these decay modes will be very desirable.

• OSTI ID: 7197462
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 46:9; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662230 -- Quantum Chromodynamics-- (1992-)
662360* -- Decays of Baryons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
ASYMMETRY
BARYONS
CABIBBO ANGLE
CHARM PARTICLES
CHARMED BARYONS
DECAY
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
HAMILTONIANS
LAMBDA C PLUS BARYONS
MATHEMATICAL OPERATORS
MATRIX ELEMENTS
OMEGA C NEUTRAL BARYONS
PARITY
PARTICLE DECAY
PARTICLE PROPERTIES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUANTUM OPERATORS
S CHANNEL
SPIN
U CHANNEL
WEAK HADRONIC DECAY
WEAK PARTICLE DECAY
XI C PLUS BARYONS