Amplitude analysis of B0 → D ¯ 0K+π- decays AMPLITUDE ANALYSIS of ⋯R. AAIJ et al.

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Abstract

The Dalitz plot distribution of B0→D¯0K+π- decays is studied using a data sample corresponding to 3.0fb-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∗(892)0, K∗(1410)0, K2∗(1430)0 and D2∗(2460)- resonances. The model also contains components to describe broad structures, including the K0∗(1430)0 and D0∗(2400)- resonances, in the Kπ S-wave and the Dπ S- and P-waves. The masses and widths of the D0∗(2400)- and D2∗(2460)- 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 B0→DK+π- decays.

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Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., … Zhong, L. (2015). Amplitude analysis of B0 → D ¯ 0K+π- decays AMPLITUDE ANALYSIS of ⋯R. AAIJ et al. Physical Review D - Particles, Fields, Gravitation and Cosmology, 92(1). https://doi.org/10.1103/PhysRevD.92.012012

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