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Title: First observation of the rare B+ → D+K+π− decay
Author: Abellan Beteta, Carlos
Camboni, Alessandro
Comerma Montells, Albert
Garrido Beltrán, Lluís
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Pérez-Calero Yzquierdo, Antonio
Picatoste Olloqui, Eduardo
Rives Molina, Vicente José
LHCb Collaboration
Keywords: Hadrons
Mesons (Física nuclear)
Mesons (Nuclear physics)
Issue Date: 3-Mar-2016
Publisher: American Physical Society
Abstract: The B+ -> D+K+pi(-) decay is observed in a data sample corresponding to 3.0 fb(-1) of pp collision data recorded by the LHCb experiment during 2011 and 2012. The signal significance is 8 sigma and the branching fraction is measured to be B(B+ -> D+K+pi(-)) = (5.31 +/- 0.90 +/- 0.48 +/- 0.35) x 10(-6), where the uncertainties are statistical, systematic and due to the normalization mode B+ -> D-K+pi(+), respectively. The Dalitz plot appears to be dominated by broad structures. Angular distributions are exploited to search for quasi-two-body contributions from B+ -> D*(2)(2460)K-0(+) and B+ -> (D+K*)(892)(0) decays. No significant signals are observed and upper limits are set on their branching fractions.
Note: Reproducció del document publicat a:
It is part of: Physical Review D, 2016, vol. 93, num. 5
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ISSN: 2470-0010
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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