Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2008-04-09
Phys.Lett.B665:16-19,2008
Physics
High Energy Physics
High Energy Physics - Experiment
Scientific paper
10.1016/j.physletb.2008.05.054
By analyzing about 33 $\rm pb^{-1}$ data sample collected at and around 3.773 GeV with the BES-II detector at the BEPC collider, we directly measure the branching fractions for the neutral and charged $D$ inclusive semimuonic decays to be $BF(D^0 \to \mu^+ X) =(6.8\pm 1.5\pm 0.7)%$ and $BF(D^+ \to \mu^+ X) =(17.6 \pm 2.7 \pm 1.8)%$, and determine the ratio of the two branching fractions to be $\frac{BF(D^+ \to \mu^+ X)}{BF(D^0 \to \mu^+ X)}=2.59\pm 0.70 \pm 0.25$.
Ablikim Medina
BES Collaboration
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