Published May 29, 1998
| Version v1
Journal article
Measurement of Ds→τντ and search for B→τντ with the L3 detector
Creators
- 1. University of California, San Diego, La Jolla, California 92093 (United States)
Description
The purely leptonic decays of heavy mesons Ds→τντ and B→τντ are studied in a sample of 1.5M Z→qq-bar(γ) events collected in 1994 by the L3 detector at LEP. A signal for the decay chain Ds0→γDs, Ds→τντ, τ→lνlντ is observed in the invariant mass distribution M(γDs). From this signal, a branching ration of B(Ds→τντ)=0.074±0.028(stat)±0.016(syst)±0.018(norm) is derived, corresponding to a decay constant fDs=309±58(stat)±33(syst)±38(norm) GeV. No signal is observed for the decay B→τντ, and an upper limit of B(B→τντ)<5.7x10-4 at 90% CL is set. These results have been published in [1]
Additional details
Identifiers
- DOI
- 10.1063/1.56075;
Publishing Information
- Journal Title
- AIP Conference Proceedings
- Journal Volume
- 432
- Journal Issue
- 1
- Journal Page Range
- p. 591-594
- ISSN
- 0094-243X
- CODEN
- APCPCS
Conference
- Title
- 7. international conference on hadron spectroscopy
- Dates
- 25-30 Aug 1997
- Place
- Upton, NY (United States)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40069116
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BRANCHING RATIO; D MESONS; D S MESONS; ELECTRON-POSITRON INTERACTIONS; GEV RANGE; LEP STORAGE RINGS; LEPTONIC DECAY; LIMITING VALUES; MASS DISTRIBUTION; PARTICLE DECAY; PARTICLE IDENTIFICATION; PARTICLE PRODUCTION; PHOTONS; S MATRIX; TAU NEUTRINOS; TAU PARTICLES; Z NEUTRAL BOSONS
- Descriptors DEC
- ACCELERATORS; BASIC INTERACTIONS; BOSONS; CHARM PARTICLES; CHARMED MESONS; CYCLIC ACCELERATORS; DECAY; DIMENSIONLESS NUMBERS; DISTRIBUTION; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; HADRONS; HEAVY LEPTONS; INTERACTIONS; INTERMEDIATE BOSONS; INTERMEDIATE VECTOR BOSONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; MASSLESS PARTICLES; MATRICES; MESONS; NEUTRINOS; PARTICLE DECAY; PARTICLE INTERACTIONS; PSEUDOSCALAR MESONS; SPATIAL DISTRIBUTION; STORAGE RINGS; STRANGE MESONS; STRANGE PARTICLES; SYNCHROTRONS; WEAK INTERACTIONS; WEAK PARTICLE DECAY
Optional Information
- Notes
- (c) 1998 American Institute of Physics.