Recent results from the Crystal Barrel experiment

Conference · Wed Oct 09 00:00:00 EDT 1991

OSTI ID:10116737

The Crystal Barrel Collaboration

The Crystal Barrel experiment has been constructed and installed at the Low Energy Antiproton Ring (LEAR) at CERN. It has been fully operational since late 1989. In this talk, recent results of meson spectroscopy in p{bar p}-annihilations are presented. The main emphasis is on all-neutral annihilations, the study of the strange quark content of the proton, and the investigation of the decay mode of il particles. A 2{sup ++} resonance decaying into {pi}{degrees}{pi}{degrees}at a mass of 1515 {plus_minus} 10 MeV with a width of 120 {plus_minus} 10 MeV has been seen in a 3{pi}{degrees} final state.

• Research Organization: European Organization for Nuclear Research, Geneva (Switzerland)
• Sponsoring Organization: USDOE, Washington, DC (United States); Bundesministerium fuer Forschung und Technologie, Bonn (Germany); Science and Engineering Research Council, Swindon (United Kingdom); Schweizerischer Nationalfonds zur Foerderung der Wissenschaftlichen Forschung, Bern (Switzerland)
• DOE Contract Number: FG03-87ER40323
• OSTI ID: 10116737
• Report Number(s): CERN-PPE-91/188; CONF-9107247-1; ON: DE93004289
• Resource Relation: Conference: Workshop on Nucleon-Antinucleon Interactions. NAN-91,Moscow (Russian Federation),8-11 Jul 1991; Other Information: PBD: 9 Oct 1991
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
PROTON-ANTIPROTON INTERACTIONS
MESON SPECTROSCOPY
DRIFT CHAMBERS
ETA MESONS
SHOWER COUNTERS
CERN
ANNIHILATION
QUARKS
FINAL-STATE INTERACTIONS
PIONS
PARTICLE DECAY
STRANGENESS
QUANTUM CHROMODYNAMICS
662340
440104
HADRON INTERACTIONS
HIGH ENERGY PHYSICS INSTRUMENTATION