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

Sheldon Stone

doi:10.1088/1742-6596/110/5/052051

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

Sheldon Stone

Department of Physics

Research output: Contribution to journal › Conference Article › peer-review

Abstract

I report final CLEO-c results on the purely leptonic decays of the D_s⁺ → 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 f_D_s 275 ± 10 ± 5 MeV, and f_D_s⁺/f_D⁺ 1.24 ± 0.10 ± 0.03.

Original language	English (US)
Article number	052051
Journal	Journal of Physics: Conference Series
Volume	110
Issue number	5
DOIs	https://doi.org/10.1088/1742-6596/110/5/052051
State	Published - Jun 30 2008
Event	EPS High Energy Particle Physics Conference, HEPP 2007 - Manchester, United Kingdom Duration: Jul 19 2007 → Jul 26 2007

ASJC Scopus subject areas

General Physics and Astronomy

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title = "B(Ds+ → ℓ+ν) and the Decay Constant f Ds+",

abstract = "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.",

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AB - 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.

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

Abstract

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