Recent results from the Crystal Barrel experiment

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

OSTI ID:6832323

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; BMFT; UKSERC; SCHNAT; 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: 6832323
• Report Number(s): CERN-PPE-91/188; CONF-9107247-1; ON: DE93004289
• Resource Relation: Conference: NAN 91, Moscow (Russian Federation), 8-11 Jul 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
DRIFT CHAMBERS
PROTON-ANTIPROTON INTERACTIONS
MESON SPECTROSCOPY
ANNIHILATION
CERN
ETA MESONS
FINAL-STATE INTERACTIONS
PARTICLE DECAY
PIONS
QUANTUM CHROMODYNAMICS
QUARKS
SHOWER COUNTERS
STRANGENESS
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
BOSONS
DECAY
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
INTERNATIONAL ORGANIZATIONS
MEASURING INSTRUMENTS
MESONS
MULTIWIRE PROPORTIONAL CHAMBERS
NUCLEON-ANTINUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
POSTULATED PARTICLES
PROPORTIONAL COUNTERS
PSEUDOSCALAR MESONS
QUANTUM FIELD THEORY
RADIATION DETECTORS
SPECTROSCOPY
662340* - Hadron Interactions- (1992-)
440104 - Radiation Instrumentation- High Energy Physics Instrumentation