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

Conference · Wed Sep 01 00:00:00 EDT 1982

OSTI ID:6487312

Newman-Holmes, C

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
• Resource Relation: Conference: 21. international conference on high energy physics, Paris, France, 29 Jul 1982
• Country of Publication: United States
• Language: English

Related Subjects

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