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Title: First observation of the decay B-0 -> D-0(D)over-bar(0)K(+)pi(-)
Author: Alfonso Albero, Alejandro
Calvo Gómez, Míriam
Camboni, Alessandro
Coquereau, Samuel
García Moreno, P.
Garrido Beltrán, Lluís
Gascón Fora, David
Gironella Gironell, Pere
Golobardes, Elisabet
Gómez Fernández, S.
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Manera Escalero, R.
Mauricio, J.
Vilasis-Cardona, Xavier
LHCb Collaboration
Keywords: Gran Col·lisionador d'Hadrons
Mesons (Física nuclear)
Large Hadron Collider (France and Switzerland)
Mesons (Nuclear physics)
Issue Date: 22-Sep-2020
Publisher: American Physical Society
Abstract: The first observation of the decay B0→D0¯D0K+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→D0¯D0K+π− decays is thus determined to be B(B0→D0¯D0K+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.
Note: Reproducció del document publicat a:
It is part of: Physical Review D, 2020, vol. 102, num. 5, p. 051102
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ISSN: 1550-7998
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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