Published July 16, 1979 | Version v1
Journal article Metadata-only

Observation of J/psi (3100) production by 209-GeV muons

Creators

  • 1. Physics Department and Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720

Description

Interactions of 209-GeV muons within a magnetized-steel calorimeter have produced 1000 +- 80μ+μ- pairs from J/psi (3100) decay. Redundant systems of proportional and drift chambers maintained uniform acceptance and 9% mass resolution. Above 30 GeV, the cross section for psi production by virtual photons is found to rise less steeply with energy than predicted by a quantum chromodynamics calculation. Its dependence on Q2 fits the vector-dominance form (1 + Q2/M2)-2 with M = 2.7 +- 0.5 GeV

Additional details

Publishing Information

Journal Title
Phys. Rev. Lett.
Journal Volume
43
Journal Issue
3
Series
Phys. Rev. Lett.
Journal Page Range
187-190
ISSN
0031-9007

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
11498592
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
CROSS SECTIONS; GEV RANGE 100-1000; IRON; LEPTONIC DECAY; MASS SPECTRA; MUON PAIRS; MUON REACTIONS; PARTICLE PRODUCTION; PSI-3105 RESONANCES; QUANTUM CHROMODYNAMICS; VECTOR DOMINANCE MODEL
Descriptors DEC
BASIC INTERACTIONS; BOSONS; DECAY; ELEMENTARY PARTICLES; ELEMENTS; ENERGY RANGE; FIELD THEORIES; GEV RANGE; HADRONS; INTERACTIONS; LEPTON REACTIONS; MATHEMATICAL MODELS; MESON RESONANCES; MESONS; METALS; NUCLEAR REACTIONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE MODELS; PSI RESONANCES; QUANTUM FIELD THEORY; RESONANCE PARTICLES; SPECTRA; TRANSITION ELEMENTS; WEAK INTERACTIONS; WEAK PARTICLE DECAY