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First observation of the decay B0D0D¯K+0π

R. Aaij et al. (LHCb Collaboration)
Phys. Rev. D 102, 051102(R) – Published 22 September 2020
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Abstract

The first observation of the decay B0D0D¯0K+π is reported using proton-proton collision data corresponding to an integrated luminosity of 4.7fb1 collected by the LHCb experiment in 2011, 2012 and 2016. The measurement is performed in the full kinematically allowed range of the decay outside of the D* region. The ratio of the branching fraction relative to that of the control channel B0D*D0K+ is measured to be R=(14.2±1.1±1.0)%, where the first uncertainty is statistical and the second is systematic. The absolute branching fraction of B0D0D¯0K+π decays is thus determined to be B(B0D0D¯0K+π)=(3.50±0.27±0.26±0.30)×104, where the third uncertainty is due to the branching fraction of the control channel. This decay mode is expected to provide insights to spectroscopy and the charm-loop contributions in rare semileptonic decays.

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  • Received 9 July 2020
  • Accepted 27 August 2020

DOI:https://doi.org/10.1103/PhysRevD.102.051102

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

© 2020 CERN, for the LHCb Collaboration

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Vol. 102, Iss. 5 — 1 September 2020

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