First observation of the decay B 0 → D 0 D ¯ K + 0 π −

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First observation of the decay B 0 → D 0 D ¯ K + 0 π −

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PhysRevD.102.051102.pdf

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Date Issued

2020

Journal

Physical Review D

Publisher

American Physical Society (APS)

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Final published version

Abstract

© 2020 CERN. The first observation of the decay B0→D0D¯0K+π- is reported using proton-proton collision data corresponding to an integrated luminosity of 4.7 fb-1 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 B0→D∗-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 B0→D0D¯0K+π- decays is thus determined to be B(B0→D0D¯0K+π-)=(3.50±0.27±0.26±0.30)×10-4, 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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https://hdl.handle.net/1721.1/133683

DOI of Published Version

10.1103/PhysRevD.102.051102