Published June 26, 1986
| Version v1
Journal article
Investigation of the reaction e+e-->etaπ+π- in the energy range up to 1.4 GeV
Creators
- 1. AN SSSR, Novosibirsk. Inst. Yadernoj Fiziki
Description
The reaction e+e-->etaπ+π- has been studied with the Neutral Detector in the CM energy range 1.05-1.40 GeV at VEPP-2M. At the maximum energy the cross section exceeds the prediction of the vector dominance with one rho(770). The following upper limits for the electron width times branching ratio into etaπ+π- have been obtained for a resonance with a mass of 1.28 GeV and width of 0.08 GeV observed with the Omega-spectrometer at CERN: GAMMAsub(ee).Bsub(etaππ) < 9 eV, and for a rho'(1250) with a mass of 1.26 GeV and width of 0.125 GeV: GAMMAsub(ee).Bsub(etaππ) < 14 eV at 90% confidence level. (orig.)
Additional details
Publishing Information
- Journal Title
- Phys. Lett., B
- Journal Volume
- 174
- Journal Issue
- 1
- Series
- Phys. Lett., B.
- Journal Page Range
- 115-117
- ISSN
- 0370-2693
- CODEN
- PYLBA
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 17075960
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ANNIHILATION; BRANCHING RATIO; EFFECTIVE MASS; ELECTRON-POSITRON INTERACTIONS; ENERGY DEPENDENCE; ETA MESONS; EXCITATION FUNCTIONS; EXPERIMENTAL DATA; GEV RANGE 01-10; HADRONIC PARTICLE DECAY; INTEGRAL CROSS SECTIONS; LEPTONIC DECAY; LIMITING VALUES; MASS SPECTRA; PAIR PRODUCTION; PARTICLE WIDTHS; PIONS MINUS; PIONS PLUS; REST MASS; RHO-1250 RESONANCES
- Descriptors DEC
- ANTIMATTER; ANTIMESONS; ANTIPARTICLES; BASIC INTERACTIONS; BOSONS; CROSS SECTIONS; DATA; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; GEV RANGE; HADRONS; INFORMATION; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; MASS; MATTER; MESON RESONANCES; MESONS; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; PIONS; PSEUDOSCALAR ANTIMESONS; PSEUDOSCALAR MESONS; RESONANCE PARTICLES; SPECTRA; WEAK INTERACTIONS; WEAK PARTICLE DECAY