Measurement of the branching ratio of the decay D^0 -> π^-μ^+ν relative to D^0 -> K^-μ^+ν

Details Measurement of the branching ratio of the decay D^0 -> π^-μ^+ν relative to D^0 -> K^-μ^+ν Measurement of the branching ratio of the decay D^0 -> π^-μ^+ν relative to D^0 -> K^-μ^+ν

2004-10-23

arxiv.org/abs/hep-ex/0410068v1

Phys.Lett.B607:51-58,2005

Physics

High Energy Physics

High Energy Physics - Experiment

13pages, 3 figures

Scientific paper

10.1016/j.physletb.2004.12.062

We present a new measurement of the branching ratio of the Cabibbo suppressed decay D^0\to \pi^-\mu^+\nu relative to the Cabibbo favored decay D^0\to K^-\mu^+\nu and an improved measurement of the ratio |\frac{f_+^{\pi}(0)}{f_+^{K}(0)}|. Our results are 0.074 \pm 0.008 \pm 0.007 for the branching ratio and 0.85 \pm 0.04 \pm 0.04 \pm 0.01 for the form factor ratio, respectively.

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