SU(3) symmetry and quark diagrams in weak nonleptonic decays of charmed hadrons

Journal Article · Sat Sep 01 04:00:00 EDT 1979 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5295676

Khodzhamiryan, A Y

The consequences of the SU(3)-symmetric and quark structures of weak nonleptonic decays of charmed hadrons are considered. The most general consequences of this structure are the relations between the decay amplitudes which follow from the selection rules in T, U, and V spins. A large number of additional relations for the decays of the charmed mesons D/sup +/, D/sup 0/, and F/sup +/ follow from the symmetry of the quark diagrams corresponding to these decays if we neglect all diagrams of the annihilation type. These relations have been obtained for two-particle and three-particle decays. From these in turn we have obtained experimentally verifiable relations between the probabilities of these decays. With use of the existing experimental data on nonleptonic decays of the D/sup +/ and D/sup 0/ mesons we have obtained estimates of the relative probabilities of all remaining decay modes of the same type. High relative probabilities (at the level of several percent) are predicted for the individual decay modes of D and F mesons into three pseudoscalar mesons in a symmetric state and into a vector and a pseudoscalar meson with a change of strangeness ..delta..S=-1, and also comparatively high probabilities (up to 1--2%) of certain modes of these decays with ..delta..S=0 which are suppressed on the basis of the Cabibbo angle. These results can serve as a guide in the further search for charmed mesons in various reactions.

• Research Organization: Erevan Physics Institute
• OSTI ID: 5295676
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 30:3; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CHARM PARTICLES
CHARMED MESON RESONANCES
COMPOSITE MODELS
DECAY
ELEMENTARY PARTICLES
HADRONS
LIE GROUPS
MATHEMATICAL MODELS
MESON RESONANCES
MESONS
PARTICLE DECAY
PARTICLE MODELS
POSTULATED PARTICLES
QUARK MODEL
RESONANCE PARTICLES
SU GROUPS
SU-3 GROUPS
SYMMETRY GROUPS
WEAK HADRONIC DECAY
WEAK PARTICLE DECAY