Recent results on open and hidden charm production in e/sup +/e/sup -/ annihilation at 29 GeV

Conference · Tue Mar 01 00:00:00 EST 1988

OSTI ID:5160881

Wormser, G

Inclusive )psi) production in e/sup +/e/sup )minus/) annihilation at 29 GeV has been measured with the Mark II detector. The )psi) cross section is found to be 1.1 )+-) 0.5 )+-) 0.4 pb. An upper limit of 0.02 sigma/sub ..mu mu../ is obtained for other sources of )psi) production. )eta) production has also been investigated, using the ..gamma gamma.. decay mode. The )eta) fragmentation function has been measured and found to be in good agreement with the Lund model prediction. )eta)' production has been measured for the first time in high energy e/sup +/e/sup )minus/) annihilation. A search for D/sub s//sup )+-/) decays into )eta) ..pi../sup )+-/) and )eta)' ..pi../sup )+-/) has been performed and evidence has been found for both decay modes at the 3 sigma level. 11 refs., 5 figs.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (USA)
• DOE Contract Number: AC03-76SF00515; AC03-76SF00098; AC02-76ER03064
• OSTI ID: 5160881
• Report Number(s): SLAC-PUB-4593; CONF-880331-2; ON: DE88008962
• Resource Relation: Conference: 3. Lake Louise Winter Institute on quantum chromodynamics: theory and experiment, Lake Louise, Canada, 6 Mar 1988
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARM PARTICLES
PARTICLE PRODUCTION
ANNIHILATION
CROSS SECTIONS
ELECTRON-POSITRON INTERACTIONS
EXPERIMENTAL DATA
FRAGMENTATION
MASS DISTRIBUTION
MASS SPECTRA
MULTIPLICITY
BASIC INTERACTIONS
DATA
DISTRIBUTION
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
SPATIAL DISTRIBUTION
SPECTRA
645100* - High Energy Physics- Particle Interactions & Properties-Experimental