Published March 1, 2009
| Version v1
Journal article
Improved measurement of absolute branching fraction of Ds+→τ+ντ
Creators
- Onyisi, P. U. E.1
- Rosner, J. L.1
- Alexander, J. P.2
- Cassel, D. G.2
- Duboscq, J. E.2
- Ehrlich, R.2
- Fields, L.2
- Galik, R. S.2
- Gibbons, L.2
- Gray, R.2
- Gray, S. W.2
- Hartill, D. L.2
- Heltsley, B. K.2
- Hertz, D.2
- Hunt, J. M.2
- Kandaswamy, J.2
- Kreinick, D. L.2
- Kuznetsov, V. E.2
- Ledoux, J.2
- Mahlke-Krueger, H.2
- and others
- CLEO Collaboration
- 1. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)
- 2. Cornell University, Ithaca, New York 14853 (United States)
Description
We have studied the leptonic decay Ds+→τ+ντ, via the decay channel τ+→e+νeντ, using a sample of tagged Ds+ decays collected near the Ds*±Ds± peak production energy in e+e- collisions with the CLEO-c detector. We obtain B(Ds+→τ+ντ)=(5.30±0.47±0.22)% and determine the decay constant fDs=(252.5±11.1±5.2) MeV, where the first uncertainties are statistical and the second are systematic.
Additional details
Identifiers
- DOI
- 10.1103/PhysRevD.79.052002;
- arXiv
- arXiv:0901.1147v3;
Publishing Information
- Journal Title
- Physical Review. D, Particles Fields
- Journal Volume
- 79
- Journal Issue
- 5
- Journal Page Range
- p. 052002-052002.7
- ISSN
- 0556-2821
- CODEN
- PRVDAQ
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41010889
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- BRANCHING RATIO; CESR STORAGE RING; ELECTRON NEUTRINOS; ELECTRON-POSITRON COLLISIONS; LEPTONIC DECAY; MEV RANGE 100-1000; MULTIPARTICLE SPECTROMETERS; PARTICLE IDENTIFICATION; PEAKS; TAU NEUTRINOS; TAU PARTICLES
- Descriptors DEC
- BASIC INTERACTIONS; COLLISIONS; DECAY; DIMENSIONLESS NUMBERS; ELECTRON COLLISIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; HEAVY LEPTONS; INTERACTIONS; LEPTONS; MASSLESS PARTICLES; MEASURING INSTRUMENTS; MEV RANGE; NEUTRINOS; PARTICLE DECAY; POSITRON COLLISIONS; SPECTROMETERS; STORAGE RINGS; WEAK INTERACTIONS; WEAK PARTICLE DECAY
Optional Information
- Notes
- (c) 2009 The American Physical Society
- Collaborations
- CLEO Collaboration