Measurement of inclusive eta production in e/sup +/e/sup -/ interactions near charm threshold

Conference · Fri Aug 01 04:00:00 EDT 1980

OSTI ID:5071117

Porter, F C

The inclusive cross section for eta production in e/sup +/e/sup -/ interactions near charm threshold was measured by use of the Crystal Ball detector at SPEAR. By comparison of the inclusive eta production above and below charm threshold the following limits were obtained: R(e/sup +/e/sup -/ ..-->.. F anti FX)BR(F ..-->.. eta x) < 0.3 (90% C.L., E/sub cm/ < 4.5 GeV); BR(D ..-->.. eta x) < 0.13 (90% C.L., averaged over charged and neutral D components of the psi''). 4 figures, 1 table.

• Research Organization: Stanford Linear Accelerator Center, CA (USA); California Inst. of Tech., Pasadena (USA)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 5071117
• Report Number(s): SLAC-PUB-2593; CALT-68-792; CONF-800724-38
• Country of Publication: United States
• Language: English

Related Subjects

645101* -- High Energy Physics-- Particle Interactions &amp; Properties-Experimental-- Electromagnetic Interactions &amp; Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESON RESONANCES
CROSS SECTIONS
D RESONANCES
D-1865 RESONANCES
DATA
DECAY
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ETA MESONS
EXCITATION FUNCTIONS
EXPERIMENTAL DATA
F-2030 RESONANCES
FUNCTIONS
GAS TRACK DETECTORS
HADRONIC PARTICLE DECAY
HADRONS
INCLUSIVE INTERACTIONS
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MEASURING INSTRUMENTS
MESON RESONANCES
MESONS
MULTIWIRE PROPORTIONAL CHAMBERS
NAI DETECTORS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
POSTULATED PARTICLES
PROPORTIONAL COUNTERS
PSEUDOSCALAR MESONS
RADIATION DETECTORS
RESONANCE PARTICLES
SCINTILLATION COUNTERS
SOLID SCINTILLATION DETECTORS
SPARK CHAMBERS