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

Abstract

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 ofmore » 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.« less

Authors:
Publication Date:
Research Org.:
Erevan Physics Institute
OSTI Identifier:
5295676
Resource Type:
Journal Article
Journal Name:
Sov. J. Nucl. Phys. (Engl. Transl.); (United States)
Additional Journal Information:
Journal Volume: 30:3
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHARMED MESON RESONANCES; WEAK HADRONIC DECAY; QUARK MODEL; SU-3 GROUPS; BOSONS; CHARM PARTICLES; COMPOSITE MODELS; DECAY; ELEMENTARY PARTICLES; HADRONS; LIE GROUPS; MATHEMATICAL MODELS; MESON RESONANCES; MESONS; PARTICLE DECAY; PARTICLE MODELS; POSTULATED PARTICLES; RESONANCE PARTICLES; SU GROUPS; SYMMETRY GROUPS; WEAK PARTICLE DECAY; 645204* - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties

Citation Formats

Khodzhamiryan, A Y. SU(3) symmetry and quark diagrams in weak nonleptonic decays of charmed hadrons. United States: N. p., 1979. Web.
Khodzhamiryan, A Y. SU(3) symmetry and quark diagrams in weak nonleptonic decays of charmed hadrons. United States.
Khodzhamiryan, A Y. Sat . "SU(3) symmetry and quark diagrams in weak nonleptonic decays of charmed hadrons". United States.
@article{osti_5295676,
title = {SU(3) symmetry and quark diagrams in weak nonleptonic decays of charmed hadrons},
author = {Khodzhamiryan, A Y},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/5295676}, journal = {Sov. J. Nucl. Phys. (Engl. Transl.); (United States)},
number = ,
volume = 30:3,
place = {United States},
year = {1979},
month = {9}
}