Published November 1998
| Version v1
Journal article
Measurement of Michel parameter in τ decay
- 1. Institute of High Energy Physics, CAS, Beijing (China)
Description
The authors have analysed the e+e- collision data collected with Beijing Spectrometer at the center-of-mass energy 4.03 GeV and selected e+e-→τ+-τ-+→e+-X-+ν's events, X+- required as μ+-, π+- and ρ+-. From fitting electron energy spectrum in τ→eν's decay, the measurement value of Michel parameter is given as ρτ→e = 0.705-0.054-0.026+0.055+0.027, this result is in good agreement with the prediction of standard Model
Additional details
Publishing Information
- Journal Title
- High Energy Physics and Nuclear Physics
- Journal Volume
- 22
- Journal Issue
- 11
- Journal Page Range
- p. 961-968
- ISSN
- 0254-3052
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 30004073
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- BEIJING ELECTRON-POSITRON COLLIDER; ELECTRON SPECTRA; ELECTRON-POSITRON INTERACTIONS; ERRORS; GEV RANGE 01-10; MAGNETIC SPECTROMETERS; MUONS; PARAMETRIC ANALYSIS; PARTICLE DECAY; PIONS; STANDARD MODEL; TAU PARTICLES
- Descriptors DEC
- ACCELERATORS; BOSONS; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; FIELD THEORIES; GEV RANGE; GRAND UNIFIED THEORY; HADRONS; HEAVY LEPTONS; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; LINEAR ACCELERATORS; MATHEMATICAL MODELS; MEASURING INSTRUMENTS; MESONS; PARTICLE INTERACTIONS; PARTICLE MODELS; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; SPECTRA; SPECTROMETERS; STORAGE RINGS; UNIFIED GAUGE MODELS