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Measurement of D+ ---> K(S)0 K+ and D(S)+ ---> K(S)0 pi+ branching ratios

Collaboration
•
Oct, 2009
5 pages
Published in:
  • Phys.Rev.D 80 (2009) 111101
e-Print:
DOI:
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Abstract: (arXiv)
We report an improved measurement of the D+→KS0K+D^+ \to K_S^0 K^+ and Ds+→KS0π+D^+_s\to K_S^0 \pi^+ branching ratios using 605 fb−1^{-1} of data collected with the Belle detector at the KEKB asymmetric-energy e+e−e^+ e^- collider. The measured branching ratios with respect to the Cabibbo-favored modes are B(D+→KS0K+)/B(D+→KS0π+)\mathcal{B}(D^+ \to K_S^0 K^+)/\mathcal{B}(D^+ \to K_S^0 \pi^+) = 0.1899±0.0011±\pm0.0011\pm0.0022 and B(Ds+→KS0π+)/B(Ds+→KS0K+)\mathcal{B}(D^+_s \to K_S^0 \pi^+)/\mathcal{B}(D^+_s \to K_S^0 K^+) = 0.0803±0.0024±\pm0.0024\pm0.0019 where the first uncertainties are statistical and the second are systematic.
  • 11.30.Hv
  • 13.25.Ft
  • 14.40.Lb
  • D+: branching ratio
  • electron positron: annihilation
  • D+: hadronic decay
  • D/s+: hadronic decay
  • D/s+: branching ratio
  • BELLE
  • KEK-B