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Measurement of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi>−</mml:mi><mml:mrow><mml:msup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>mixing rate with<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>B</mml:mi…
We report a measurement of the B0−B0 mixing parameter Δmd based on a 29.1fb−1 sample of Υ(4S) resonance decays collected by the Belle detector at the KEKB asymmetric e+e− collider. We use events with a partially reconstructed B0(B0)→D*∓π± candidate and where the flavor of the accompanying B meson is identified …