Comparison of DKS0 and DKL0I decay rates

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Abstract

We present measurements of DKS0Ï€ and DKL0Ï€ branching fractions using 281pb-1 of (3770) data at the CLEO-c experiment. We find that B(D0KS0Ï€0) is larger than B(D0KL0Ï€0), with an asymmetry of R(D0)=0.108±0.025±0.024. For B(D+KS0Ï€+) and B(D+KL0Ï€+), we observe no measurable difference; the asymmetry is R(D+)=0.022±0.016±0.018. The D0 asymmetry is consistent with the value based on the U-spin prediction A(D0K0Ï€0)/ A(D0K 0Ï€0)=-tana ¡2 C, where C is the Cabibbo angle. © 2008 The American Physical Society.

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He, Q., Insler, J., Muramatsu, H., Park, C. S., Thorndike, E. H., Yang, F., … Napolitano, J. (2008). Comparison of DKS0 and DKL0I decay rates. Physical Review Letters, 100(9). https://doi.org/10.1103/PhysRevLett.100.091801

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