Measurement of \cal{B}(D^+ --> mu^+ nu) and the Pseudoscalar Decay Constant $f_{D^+}$

CLEO Collaboration; D. Besson; et al

arxiv: hep-ex/0408071 · v1 · submitted 2004-08-16 · ✦ hep-ex

Measurement of cal{B}(D^+ --> mu^+ nu) and the Pseudoscalar Decay Constant f_(D^+)

D. Besson , et al , CLEO Collaboration This is my paper

classification ✦ hep-ex

keywords backgroundcandidatescleo-ccompellingconstantcontainingdatadecay

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In 60 pb-1 of data taken on the psi(3770) resonance with the CLEO-c detector, we find 8 D+ to mu+ nu event candidates that are mostly signal, containing only 1 estimated background. Using this statistically compelling sample, we measure preliminary values of B(D+ to mu+ nu) = (3.5 +- 1.4 +- 0.6)*10^{-4}, and determine f_{D+} =(201+- 41+- 17) MeV.

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Measurement of cal{B}(D^+ --> mu^+ nu) and the Pseudoscalar Decay Constant f_(D^+)

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