Resonance parameters of UPSILON and UPSILON' and inclusive spectra measured at DORIS

Conference · Sun Feb 01 00:00:00 EST 1981 · AIP Conf. Proc.; (United States)

OSTI ID:6442183

Schmidt-Parzefall, W

Recent results on measurements of the UPSILON and UPSILON' resonances by the DASP2, LENA and PLUTO collaborations obtained at the DORIS storage ring are reported. The combined result for the branching ratio for UPSILON..--> mu mu.. and UPSILON..-->..ee is B/sub mumu/ = B/sub ee/ = (3.0 +- 0.8)%. Thus the total width of the UPSILON state is determined. GAMMA/sub tot/ = (43/sub -/11/sup +20/) keV. DASP2 studied inclusive particle production and observed an excess of antiprotons produced on the UPSILON.

• Research Organization: Deutsches Elektronen-Synchrotron DEST, Hamburg
• OSTI ID: 6442183
• Report Number(s): CONF-800724-; TRN: 81-012625
• Journal Information: AIP Conf. Proc.; (United States), Vol. 68:1; Conference: 20. international conference on high energy physics, Madison, WI, USA, 17 Jul 1980
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ELECTRON-POSITRON INTERACTIONS
PARTICLE PRODUCTION
UPSILON RESONANCES
DECAY
ANGULAR DISTRIBUTION
BRANCHING RATIO
DORIS STORAGE RING
INCLUSIVE INTERACTIONS
QUANTUM CHROMODYNAMICS
QUARKS
TIME-OF-FLIGHT METHOD
BOSONS
DISTRIBUTION
ELEMENTARY PARTICLES
FIELD THEORIES
HADRONS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MESON RESONANCES
MESONS
PARTICLE INTERACTIONS
POSTULATED PARTICLES
QUANTUM FIELD THEORY
RESONANCE PARTICLES
STORAGE RINGS
645101* - High Energy Physics- Particle Interactions & Properties-Experimental- Electromagnetic Interactions & Properties