D + → μ + ν and f D + from 281 pb − 1 at ψ ( 3770 ) from CLEO - c
نویسنده
چکیده
We report improved measurements of branching fraction and decay constant f D + in D + → µ + ν using 281 pb −1 of data taken on the ψ(3770) resonance with the CLEO-c detector. We extract a relatively precise value for the decay constant of the D + meson by measuring B(D + → µ + ν) =
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