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Observation of the radiative decay J/psi. -->. gamma. eta. pi pi

Conference ·
OSTI ID:6487312
The radiative decay J/psi ..-->.. ..gamma.. eta ..pi pi.. has been observed in data taken with the Crystal Ball detector at the SPEAR e/sup +/e/sup -/ storage ring. In addition to the well-known eta', the eta ..pi pi.. mass spectrum shows a broad enhancement centered at approx. 1700 MeV. There is no explicit evidence for the l(1440) in the eta ..pi pi.. mass spectrum.
Research Organization:
Princeton Univ., NJ (USA). Dept. of Physics; Stanford Linear Accelerator Center, CA (USA)
DOE Contract Number:
AC03-76SF00515
OSTI ID:
6487312
Report Number(s):
SLAC-PUB-2971; CONF-820718-28; ON: DE83007006
Country of Publication:
United States
Language:
English

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Related Subjects

645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BRANCHING RATIO
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
ETA MESONS
GEV RANGE
GEV RANGE 01-10
HADRONS
MESON RESONANCES
MESONS
PARTICLE DECAY
PIONS
PSEUDOSCALAR MESONS
PSEUDOSCALARS
PSI RESONANCES
RADIATIVE DECAY
RESONANCE PARTICLES
VECTOR MESONS