B(Ds+ → ℓ+ν) and the Decay Constant f Ds+

Sheldon Stone

Research output: Contribution to journalConference Articlepeer-review


I report final CLEO-c results on the purely leptonic decays of the Ds+ → ℓ+ν, for the cases when ℓ+ is a μ+ or τ+, when it decays into π+ using 314 pb-1 of data at 4.170 GeV. I also include preliminary results from the τ+ τ e+→ channel using 195 pb-1. Combining both we measure fDs 275 ± 10 ± 5 MeV, and fDs+/fD+ 1.24 ± 0.10 ± 0.03.

Original languageEnglish (US)
Article number052051
JournalJournal of Physics: Conference Series
Issue number5
StatePublished - Jun 30 2008
EventEPS High Energy Particle Physics Conference, HEPP 2007 - Manchester, United Kingdom
Duration: Jul 19 2007Jul 26 2007

ASJC Scopus subject areas

  • General Physics and Astronomy


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