Abstract:
The Dalitz plot distribution of B[superscript 0] → [bar over D][superscript 0]K[superscript +]π[superscript -] decays is studied using a data sample corresponding to 3.0 fb[superscript -1] of pp collision data recorded by the LHCb experiment during 2011 and 2012. The data are described by an amplitude model that contains contributions from intermediate K[superscript *](892)[superscript 0], K[superscript *](1410)[superscript 0], K[* over 2](1430)[superscript 0] and D[* over 2](2460)[superscript -] resonances. The model also contains components to describe broad structures, including the K[* over 0](1430)[superscript 0] and D[* over 0](2400)[superscript -] resonances, in the Kπ S-wave and the Dπ S- and P-waves. The masses and widths of the D[* over 0](2400)[superscript -] and D[* over 0](2460)[superscript -] resonances are measured, as are the complex amplitudes and fit fractions for all components included in the amplitude model. The model obtained will be an integral part of a future determination of the angle γ of the Cabibbo-Kobayashi-Maskawa quark mixing matrix using B[superscript 0] → DK[superscript +]π[superscript -] decays.
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