Observation of an eta/sub c/ candidate state with mass 2978 +- 9 MeV
Journal Article
·
· Phys. Rev. Lett.; (United States)
An eta/sub c/ candidate state has been observed with a mass M=2978 +- 9 MeV and a natural line width GAMMA<20 MeV (90% confidence level) using the Crystal Ball NaI(Tl) detector at SPEAR. Radiative transitions to this state are observed from psi'(3684) and J/psi(3095) in the inclusive photon spectra. The branching fraction to this state from the psi' is (0.43 +- 0.08 +- 0.18)%, where the errors are statistical and systematic, respectively. In addition, evidence is presented for the decay of this new state into eta..pi../sup +/..pi../sup -/ and an upper limit is presented on the decay into ..pi../sup 0/K/sup +/K/sup -/.
- Research Organization:
- Physics Department, California Institute of Technology, Pasadena, California 91125
- DOE Contract Number:
- EY-76-C-02-3064; AC03-76SF00515
- OSTI ID:
- 6815309
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 45:14; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Observation of the decay psi (3684). -->. psi (3095) eta
Journal Article
·
Sun Jan 10 19:00:00 EST 1982
· Phys. Rev. Lett.; (United States)
·
OSTI ID:5786051
Radiative transitions to an eta/sub c/(2980) candidate state and the observation of hadronic decays of this state
Conference
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Sun Jun 01 00:00:00 EDT 1980
·
OSTI ID:5121869
Observation of the decay psi (3684). -->. psi (3095) eta
Journal Article
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Sun Feb 22 19:00:00 EST 1976
· Phys. Rev. Lett.; (United States)
·
OSTI ID:7356597
Related Subjects
645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESON RESONANCES
DATA
DECAY
ELECTROMAGNETIC PARTICLE DECAY
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
HADRONS
INFORMATION
MASS
MESON RESONANCES
MESONS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE IDENTIFICATION
PARTICLE PROPERTIES
PARTICLE WIDTHS
POSTULATED PARTICLES
PSI RESONANCES
PSI-3105 RESONANCES
PSI-3695 RESONANCES
RADIATIVE DECAY
RESONANCE PARTICLES
REST MASS
VECTOR MESONS
WEAK PARTICLE DECAY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESON RESONANCES
DATA
DECAY
ELECTROMAGNETIC PARTICLE DECAY
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
HADRONS
INFORMATION
MASS
MESON RESONANCES
MESONS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE IDENTIFICATION
PARTICLE PROPERTIES
PARTICLE WIDTHS
POSTULATED PARTICLES
PSI RESONANCES
PSI-3105 RESONANCES
PSI-3695 RESONANCES
RADIATIVE DECAY
RESONANCE PARTICLES
REST MASS
VECTOR MESONS
WEAK PARTICLE DECAY