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Measurements of J/psi decays into a vector and a pseudoscalar meson

Journal Article · · Phys. Rev. D; (United States)
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We present measurements of the two-body decays of the J/psi into a vector and a pseudoscalar meson. The data, taken with the Mark III detector at the SLAC e/sup +/e/sup -/ storage ring SPEAR, consist of 5.8 x 10/sup 6/ produced J/psi's. The branching ratios for the J/psi decays into rho..pi.., rhoeta, rhoeta', ..omega pi../sup 0/, ..omega..eta, ..omega..eta', phieta, phieta', and K/sup */K are measured; an upper limit on J/psi..-->..phi..pi../sup 0/ is obtained. Using the measured branching ratios we obtain parameters of a phenomenological model of J/psi decays, indicating that the eta and eta' are consistent with being composed only of light and strange quarks. The model is used to obtain the mixing angle in the pseudoscalar nonet. The ..omega pi../sup 0/ electromagnetic form factor is determined. The upper limit on J/psi..-->..phi..pi../sup 0/ is used to study the contributions from electromagnetic doubly--Okubo-Zweig-Iizuka--suppressed decays of the J/psi. .AE

Research Organization:
California Institute of Technology, Pasadena, California 91125
OSTI ID:
7086552
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 38:9; ISSN PRVDA
Country of Publication:
United States
Language:
English

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Related Subjects

645101 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
CHARMONIUM
DATA
DECAY
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FIELD THEORIES
FORM FACTORS
GLUONS
HADRONS
INFORMATION
INTERACTIONS
J PSI-3097 MESONS
LEPTON-LEPTON INTERACTIONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MESONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PHOTONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKONIUM
STRONG INTERACTIONS
VECTOR MESONS
VIRTUAL PARTICLES