Absolute Branching Fractions of Cabibbo-Suppressed D --> K Kbar Decays
Abstract
Using 281/pb of data collected with the CLEO-c detector at the psi(3770) resonance, we have studied Cabibbo-suppressed decays of D mesons to final states with two kaons. We present results for the absolute branching fractions of the modes D^0 --> K^+ K^-, D^0 --> K^0_S K^0_S, and D^+ --> K^+ K^0_S. We measure B(D^0 --> K^+ K^-) = (4.08 +- 0.08 +- 0.09) x 10^-3, B(D^0 --> K^0_S K^0_S) = (1.46 +- 0.32 +- 0.09) x 10^-4, and B(D^+ --> K^+ K^0_S) = (3.14 +- 0.09 +- 0.08) x 10^-3. We also determine the ratio B(D^0 --> K^+ K^-)/B(D^0 --> pi^+ pi^-) = 2.89 +- 0.05 +- 0.06. For each measurement, the first uncertainty is statistical and the second uncertainty is systematic.
Keywords
Cite
@article{arxiv.0803.0793,
title = {Absolute Branching Fractions of Cabibbo-Suppressed D --> K Kbar Decays},
author = {CLEO Collaboration and G. Bonvicini},
journal= {arXiv preprint arXiv:0803.0793},
year = {2010}
}
Comments
7 pages, 3 figures, available through http://www.lns.cornell.edu/public/CLNS/, published in PRD Rapid Communications