Measurement of $D^+ \to K_S^0 K^+$ and $D^+_s \to K_S^0 π^+$ branching ratios

Details Measurement of $D^+ \to K_S^0 K^+$ and $D^+_s \to K_S^0 π^+$ branching ratios Measurement of $D^+ \to K_S^0 K^+$ and $D^+_s \to K_S^0 π^+$ branching ratios

2009-10-16

arxiv.org/abs/0910.3052v2

Phys.Rev.D80:111101,2009

Physics

High Energy Physics

High Energy Physics - Experiment

Scientific paper

10.1103/PhysRevD.80.111101

We report an improved measurement of $D^+ \to K_S^0 K^+$ and $D^+_s\to K_S^0 \pi^+$ branching ratios using 605 fb$^{-1}$ of data collected with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The measured branching ratios with respect to the Cabibbo-favored modes are $\mathcal{B}(D^+ \to K_S^0 K^+)/\mathcal{B}(D^+ \to K_S^0 \pi^+)$ = 0.1899$\pm0.0011\pm$0.0022 and $\mathcal{B}(D^+_s \to K_S^0 \pi^+)/\mathcal{B}(D^+_s \to K_S^0 K^+)$ = 0.0803$\pm0.0024\pm$0.0019 where the first uncertainties are statistical and the second are systematic.

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