Published August 1995 | Version v1
Journal article Metadata-only

Measurement of J/ψ resonance parameters

Creators

  • 1. Academia Sinica, Beijing, BJ (China). Inst. of High Energy Physics

Description

The cross sections of e+e-→hadrons, e+e-, μ+μ- have been measured in the vicinity of J/ψ resonance at BES/BEPC. The fit of the observed cross sections gives the new results of J/ψ resonance parameters: the partial widths to hadrons, electrons and muons are Γh = 74.1 +- 8.1 keV, Γe = 5.14 +- 0.39 keV and Γμ = 5.13 +-0.52 keV respectively; the total width Γ = 84.4 +- 8.9 keV; the branching fractions Γh/Γ = (87.8 +- 0.5)%, Γe/Γ (6.09 +- 0.33)%, and Γμ/Γ = (6.08 +- 0.33)%

Additional details

Publishing Information

Journal Title
High Energy Physics and Nuclear Physics
Journal Volume
19
Journal Issue
8
Journal Page Range
p. 673-685.
ISSN
0254-3052
CODEN
KNWLD9

INIS

Country of Publication
China
Country of Input or Organization
China
INIS RN
27030145
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
BEIJING ELECTRON-POSITRON COLLIDER; BRANCHING RATIO; CROSS SECTIONS; ELECTRON PAIRS; EXPERIMENTAL DATA; HADRONS; J PSI-3097 MESONS; MAGNETIC SPECTROMETERS; MUON PAIRS; PARTICLE WIDTHS
Descriptors DEC
ACCELERATORS; BOSONS; CHARMONIUM; DATA; ELEMENTARY PARTICLES; INFORMATION; LINEAR ACCELERATORS; MEASURING INSTRUMENTS; MESONS; NUMERICAL DATA; PARTICLE PROPERTIES; QUARKONIUM; SPECTROMETERS; STORAGE RINGS; VECTOR MESONS

Optional Information

Collaborations
BES Collaboration.