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Measurement of interfering<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>K</mml:mi><mml:mrow><mml:mo>*</mml:mo><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mi>K</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>K</mml:mi><mml:mrow><mml:mo>*</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mi>K</mml:mi><mml:mo>+</mml:mo></mml:msup></mml…
We have studied the Cabibbo-suppressed decay mode D0→K+K−π0 using a Dalitz plot technique and find the strong phase difference δD≡δK*−K+−δK*+K−=332°±8°±11° and relative amplitude rD≡aK*−K+/aK*+K−=0.52±0.05±0.04. This measurement indicates significant destructive interference between D0→K+(K−π0)K*− and D0→K−(K+π0)K*+ in the Dalitz plot region where these two modes overlap. This analysis uses 9.0 fb−1 of …