# Amplitude analysis of $B^0 \rightarrow \bar{D}^0 K^+ \pi^-$ decays

Abstract : The Dalitz plot distribution of $B^0 \rightarrow \bar{D}^0 K^+ \pi^-$ decays is studied using a data sample corresponding to $3.0\rm{fb}^{-1}$ 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 $K^*(892)^0$, $K^*(1410)^0$, $K^*_2(1430)^0$ and $D^*_2(2460)^-$ resonances. The model also contains components to describe broad structures, including the $K^*_0(1430)^0$ and $D^*_0(2400)^-$ resonances, in the $K\pi$ S-wave and the $D\pi$ S- and P-waves. The masses and widths of the $D^*_0(2400)^-$ and $D^*_2(2460)^-$ 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 $\gamma$ of the CKM quark mixing matrix using $B^0 \rightarrow \bar{D}^0 K^+ \pi^-$ decays.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-01150324
Contributor : Danielle Cristofol Connect in order to contact the contributor
Submitted on : Monday, May 11, 2015 - 8:29:54 AM
Last modification on : Thursday, December 16, 2021 - 2:11:22 PM

### Citation

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, et al.. Amplitude analysis of $B^0 \rightarrow \bar{D}^0 K^+ \pi^-$ decays. Physical Review D, American Physical Society, 2015, 92, pp.012012. ⟨10.1103/PhysRevD.92.012012⟩. ⟨in2p3-01150324⟩

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