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Comparison of D to K0L pi and D to K0S pi Decay Rates

Q. He·CLEO Collaboration
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Abstract

We present preliminary measurements of D to K^0_L pi and D to K^0_S pi branching fractions using 281 pb^{-1} of psi(3770) data at the CLEO-c experiment. We find that BF(D^0 to KS pi^0) is larger than BF(D^0 to KL pi^0), with an asymmetry of R(D^0) = 0.122 +- 0.024 +- 0.030. For BF(D^+ to KS pi^+) and BF(D^+ to KL pi^+), we observe no measureable difference; the asymmetry is R(D^+) = 0.030 +- 0.023 +- 0.025. Under reasonable theoretical assumptions, these measurements imply a value for the D^0 to K^+- pi^-+ strong phase that is consistent with zero. The results presented in this document are preliminary.

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Q. He, CLEO Collaboration. 2006-07-27. Comparison of D to K0L pi and D to K0S pi Decay Rates. https://arxiv.org/abs/hep-ex/0607068

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