The purely leptonic decays D+ → μ+ν and Ds+ → ℓ+ν at CLEO

Sheldon Stone

The purely leptonic decays D⁺ → μ⁺ν and D_s⁺ → ℓ^+ν at CLEO

Sheldon Stone

Department of Physics

Research output: Contribution to conference › Paper › peer-review

Abstract

We update our previous results by increasing the luminosity, the efficiency, and for the D_s⁺ the number of tags. We determine f_D+ = (205.8 ± 8.5 ± 2.5) MeV, and an interim preliminary value of fD_s⁺ = (267.9 ± 8.2 ± 3.9) MeV, where both results are radiatively corrected. We agree with the recent most precise unquenched Lattice-QCD calculation for the D+, but are in disagreement for the D_s⁺. Several consequences are discussed, including the possibility of physics beyond the Standard Model.

Original language	English (US)
State	Published - 2008
Event	6th Conference on Flavor Physics and CP Violation Conference, FPCP 2008 - Taipei, Taiwan, Province of China Duration: May 5 2008 → May 9 2008

Other

Other	6th Conference on Flavor Physics and CP Violation Conference, FPCP 2008
Country/Territory	Taiwan, Province of China
City	Taipei
Period	5/5/08 → 5/9/08

ASJC Scopus subject areas

Nuclear and High Energy Physics

Cite this

@conference{d97177db8b8c4b0d89218479c99ee237,

title = "The purely leptonic decays D+ → μ+ν and Ds+ → ℓ+ν at CLEO",

abstract = "We update our previous results by increasing the luminosity, the efficiency, and for the Ds+ the number of tags. We determine fD+ = (205.8 ± 8.5 ± 2.5) MeV, and an interim preliminary value of fDs+ = (267.9 ± 8.2 ± 3.9) MeV, where both results are radiatively corrected. We agree with the recent most precise unquenched Lattice-QCD calculation for the D+, but are in disagreement for the Ds+. Several consequences are discussed, including the possibility of physics beyond the Standard Model.",

author = "Sheldon Stone",

year = "2008",

language = "English (US)",

note = "6th Conference on Flavor Physics and CP Violation Conference, FPCP 2008 ; Conference date: 05-05-2008 Through 09-05-2008",

}

TY - CONF

T1 - The purely leptonic decays D+ → μ+ν and Ds+ → ℓ+ν at CLEO

AU - Stone, Sheldon

PY - 2008

Y1 - 2008

N2 - We update our previous results by increasing the luminosity, the efficiency, and for the Ds+ the number of tags. We determine fD+ = (205.8 ± 8.5 ± 2.5) MeV, and an interim preliminary value of fDs+ = (267.9 ± 8.2 ± 3.9) MeV, where both results are radiatively corrected. We agree with the recent most precise unquenched Lattice-QCD calculation for the D+, but are in disagreement for the Ds+. Several consequences are discussed, including the possibility of physics beyond the Standard Model.

AB - We update our previous results by increasing the luminosity, the efficiency, and for the Ds+ the number of tags. We determine fD+ = (205.8 ± 8.5 ± 2.5) MeV, and an interim preliminary value of fDs+ = (267.9 ± 8.2 ± 3.9) MeV, where both results are radiatively corrected. We agree with the recent most precise unquenched Lattice-QCD calculation for the D+, but are in disagreement for the Ds+. Several consequences are discussed, including the possibility of physics beyond the Standard Model.

UR - http://www.scopus.com/inward/record.url?scp=84881156331&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84881156331&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:84881156331

T2 - 6th Conference on Flavor Physics and CP Violation Conference, FPCP 2008

Y2 - 5 May 2008 through 9 May 2008

ER -

The purely leptonic decays D⁺ → μ⁺ν and D_s⁺ → ℓ^+ν at CLEO

Abstract

Other

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this