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Comparison of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>D</mml:mi><mml:mo>→</mml:mo><mml:msubsup><mml:mi>K</mml:mi><mml:mi>S</mml:mi><mml:mn>0</mml:mn></mml:msubsup><mml:mi>π</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>D</mml:mi><mml:mo>→</mml:mo><mml:msubsup><mml:mi>K</mml:mi><mml:mi>L</mml:mi><mml:mn>0</mml:mn></mml:msubsup><mml:mi>π</mml:mi></mml:math>Decay Rates
We present measurements of D→K0Sπ and D→K0Lπ branching fractions using 281 pb−1 of ψ(3770) data at the CLEO-c experiment. We find that B(D0→K0Sπ0) is larger than B(D0→K0Lπ0), with an asymmetry of R(D0)=0.108±0.025±0.024. For B(D+→K0Sπ+) and B(D+→K0Lπ+), we observe no measurable difference; the asymmetry is R(D+)=0.022±0.016±0.018. The D0 asymmetry is consistent …