Aubert, B. et al. (2007) Measurement of the Pseudoscalar Decay Constant fDs Using Charm-Tagged Events in e+e- Collisions at s=10.58 GeV. Physical Review Letters, 98 (14). p. 141801. ISSN 0031-9007
Metadata only available from this repository.Abstract
Using 230.2 fb-1 of e+e- annihilation data collected with the BABAR detector at and near the peak of the Υ(4S) resonance, 489±55 events containing the pure leptonic decay Ds+→μ+νμ have been isolated in charm-tagged events. The ratio of partial widths Γ(Ds+→μ+νμ)/Γ(Ds+→ϕπ+) is measured to be 0.143±0.018±0.006 allowing a determination of the pseudoscalar decay constant fDs=(283±17±7±14) MeV. The errors are statistical, systematic, and from the Ds+→ϕπ+ branching ratio, respectively.
Item Type: | Article |
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Subjects: | Q Science > QC Physics |
Schools: | School of Applied Sciences |
Depositing User: | Sharon Beastall |
Date Deposited: | 31 Mar 2011 12:15 |
Last Modified: | 28 Aug 2021 11:05 |
URI: | http://eprints.hud.ac.uk/id/eprint/9995 |
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