Published March 1, 1990
| Version v1
Journal article
Search for excited leptons in Z0 decay
- 1. Grenoble-1 Univ., 74 - Annecy (France). Lab. de Physique des Particules Elementaires
Description
We have looked for evidence of excited lepton production in Z0 decay observed in the ALEPH detector at LEP. We find no llγγ events and set new limits at 95% CL on l* masses at 44.6, 44.6 and 41.2 GeV/c2 for e*, μ* and τ* respectively. Observed events in the llγ channels are consistent with radiative effects and we set limits for the first time on the l*lZ coupling for l* masses in the range up to 86 GeV/c2. (orig.)
Additional details
Publishing Information
- Journal Title
- Physics Letters, (Section) B
- Journal Volume
- 236
- Journal Issue
- 4
- Series
- Phys. Lett., B.
- Journal Page Range
- 501-510
- ISSN
- 0370-2693
- CODEN
- PYLBA
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 21041583
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ANGULAR DISTRIBUTION; ANNIHILATION; BHABHA SCATTERING; COMPOSITE MODELS; COUPLING CONSTANTS; EFFECTIVE MASS; ELECTRON-POSITRON INTERACTIONS; ELECTRONS; EXCITED STATES; EXPERIMENTAL DATA; GEV RANGE 10-100; HEAVY LEPTONS; INELASTIC SCATTERING; LEPTONIC DECAY; LIMITING VALUES; MASS SPECTRA; MUON PAIRS; MUONS MINUS; MUONS PLUS; NEUTRAL-CURRENT INTERACTIONS; PAIR PRODUCTION; PHOTONS; POSITRONS; RADIATIVE DECAY; REST MASS; TAU PARTICLES; Z NEUTRAL BOSONS
- Descriptors DEC
- ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BASIC INTERACTIONS; BOSONS; DATA; DECAY; DISTRIBUTION; ELASTIC SCATTERING; ELEMENTARY PARTICLES; ENERGY LEVELS; ENERGY RANGE; FERMIONS; GEV RANGE; INFORMATION; INTERACTIONS; INTERMEDIATE BOSONS; INTERMEDIATE VECTOR BOSONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; MASS; MASSLESS PARTICLES; MATHEMATICAL MODELS; MATTER; MUONS; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; SCATTERING; SPECTRA; WEAK INTERACTIONS; WEAK PARTICLE DECAY
Optional Information
- Collaborations
- ALEPH Collaboration.