The purely leptonic decays D+ → μ+ν and D+ s→ 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	43rd Rencontres de Moriond on QCD and High Energy Interactions, QCD 2008 - La Thuile, Italy Duration: Mar 8 2008 → Mar 15 2008

Other

Other	43rd Rencontres de Moriond on QCD and High Energy Interactions, QCD 2008
Country/Territory	Italy
City	La Thuile
Period	3/8/08 → 3/15/08

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Cite this

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

abstract = "We update our previous results by increasing the luminosity, the efficiency, and for the D+ sthe 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.",

author = "Sheldon Stone",

year = "2008",

language = "English (US)",

note = "43rd Rencontres de Moriond on QCD and High Energy Interactions, QCD 2008 ; Conference date: 08-03-2008 Through 15-03-2008",

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

AU - Stone, Sheldon

PY - 2008

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N2 - We update our previous results by increasing the luminosity, the efficiency, and for the D+ sthe 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.

AB - We update our previous results by increasing the luminosity, the efficiency, and for the D+ sthe 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.

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M3 - Paper

AN - SCOPUS:84883661185

T2 - 43rd Rencontres de Moriond on QCD and High Energy Interactions, QCD 2008

Y2 - 8 March 2008 through 15 March 2008

ER -

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

Abstract

Other

ASJC Scopus subject areas

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