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Dalitz plot analysis of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>D</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mi>K</mml:mi><mml:mo>−</mml:mo></mml:msup><mml:msup><mml:mi>π</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>π</mml:mi><mml:mo>+</mml:mo></mml:msup></mml:math>decay
We perform a Dalitz plot analysis of D+→K−π+π+ decay with the CLEO-c data set of 572 pb−1 of e+e− collisions accumulated at the ψ(3770). This corresponds to 1.6×106 D+D− pairs from which we select 140 793 candidate events with a small background of 1.1%. We compare our results with previous …