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Total cross section for electron-positron annihilation into hadron final states in the upsilon energy region

Journal Article · · Phys. Rev. D; (United States)
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We report measurements made with the CLEO detector at the Cornell Electron Storage Ring (CESR) of the total cross section for e/sup +/e/sup -/..-->..hadrons at the UPSILON(1S), UPSILON(2S), and UPSILON(3S), and in the nearby nonresonant continuum. We find R = 3.77 +- 0.06 (statistical) +- 0.24 (systematic) for the ratio of the nonresonant hadronic cross section to the cross section for muon-pair production at a center-of-mass total energy W = 10.4 GeV. For the leptonic decay widths GAMMA/sub e/e of the UPSILON(1S), UPSILON(2S), and UPSILON(3S) we obtain 1.30 +- 0.05 +- 0.08, 0.52 +- 0.03 +- 0.04 , and 0.42 +- 0.04 +- 0.03 keV, respectively.
Research Organization:
Harvard University, Cambridge, Massachusetts 02138
OSTI ID:
6900796
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 29:7; ISSN PRVDA
Country of Publication:
United States
Language:
English

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Related Subjects

645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
645102 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BOSONS
BOUND STATE
CESR STORAGE RING
CROSS SECTIONS
DATA
DECAY
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
FIELD THEORIES
GEV RANGE
GEV RANGE 10-100
HADRONS
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTONIC DECAY
LEPTONS
MESON RESONANCES
MESONS
MUONS
NUMERICAL DATA
PAIR PRODUCTION
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PARTICLE WIDTHS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKONIUM
RESONANCE PARTICLES
STORAGE RINGS
TOTAL CROSS SECTIONS
UPSILON RESONANCES
WEAK INTERACTIONS
WEAK PARTICLE DECAY