Dalitz Analysis of D^0 --> K_S^0 pi+ pi-

Details Dalitz Analysis of D^0 --> K_S^0 pi+ pi- Dalitz Analysis of D^0 --> K_S^0 pi+ pi-

2002-07-24

arxiv.org/abs/hep-ex/0207067v3

Phys.Rev.Lett.89:251802,2002; Erratum-ibid.90:059901,2003

Physics

High Energy Physics

High Energy Physics - Experiment

12 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS, submitted to PRL

Scientific paper

10.1103/PhysRevLett.89.251802

In e^+e^- collisions using the CLEO detector we have studied the decay of the D^0 to the final state K_S^0 pi^+ pi^- with the initial flavor of the D^0 tagged in charged D^* decay. We use the Dalitz technique to measure the resonant substructure in this final state and clearly observe ten different contributions by fitting for their amplitudes and relative phases. We observe a K^{* +} pi^- component which arises from doubly Cabibbo suppressed decays or D^0 - {D^0}-bar mixing.

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