Measuring cal B(D^+ --> mu^+ nu) and the Pseudoscalar Decay Constant f_D^+

Abstract

In 60 inverse-pb of data taken on the psi(3770) resonance with the CLEO-c detector, we find 8 D+ -> mu+ nu decay candidates that are mostly signal, containing only 1 estimated background. Using this statistically compelling sample, we measure a value of B(D+ -> mu+ nu) = (3.5 +/- 1.4 +/- 0.6) x10^(-4), and determine fD+=(202 +/- 41 +/-17) MeV.

18 pages postscript,also available through http://www.lns.cornell.edu/public/CLNS/2004/, submitted to PRD

References in corpus (1)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)

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