Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/131834
Title: Study of B0→D*-π+π-π+ and B0→D*-K+π-π+ decays
Author: Camboni, Alessandro
Comerma Montells, Albert
Garrido Beltrán, Lluís
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
López Asamar, Elias
Picatoste Olloqui, Eduardo
Potterat, Cédric
Ruiz, Hugo (Ruiz Pérez)
Vázquez Gómez, Ricard
Abellan Beteta, Carlos
Calvo Gómez, Míriam
Vilasis-Cardona, Xavier
Domingo Bonal, Francesc
LHCb Collaboration
Keywords: Física de partícules
Experiments
Particle physics
Experiments
Issue Date: 1-May-2013
Publisher: American Physical Society
Abstract: Using proton-proton collision data collected by the LHCb experiment at √ s = 7     TeV , corresponding to an integrated luminosity of 1.0     fb − 1 , the ratio of branching fractions of the B 0 → D * − π + π − π + decay relative to the B 0 → D * − π + decay is measured to be B ( B 0 → D * − π + π − π + ) B ( B 0 → D * − π + ) = 2.64 ± 0.04 ( stat ) ± 0.13 ( syst ) . The Cabibbo-suppressed decay B 0 → D * − K + π − π + is observed for the first time, and the measured ratio of branching fractions is B ( B 0 → D * − K + π − π + ) B ( B 0 → D * − π + π − π + ) = ( 6.47 ± 0.37 ( stat ) ± 0.35 ( syst ) ) × 10 − 2 . A search for orbital excitations of charm mesons contributing to the B 0 → D * − π + π − π + final state is also performed, and the first observation of the B 0 → ¯¯¯ D 1 ( 2420 ) 0 π + π − decay is reported with the ratio of branching fractions B ( B 0 → ( ¯¯¯ D 1 ( 2420 ) 0 → D * − π + ) π − π + ) B ( B 0 → D * − π + π − π + ) = ( 2.04 ± 0.42 ( stat ) ± 0.22 ( syst ) ) × 10 − 2 , where the numerator represents a product of the branching fractions B ( B 0 → ¯¯¯ D 1 ( 2420 ) 0 π − π + ) and B ( ¯¯¯ D 1 ( 2420 ) 0 → D * − π + ) .
Note: Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.87.092001
It is part of: Physical Review D, 2013, vol. 87, num. 9, p. 092001
URI: http://hdl.handle.net/2445/131834
Related resource: https://doi.org/10.1103/PhysRevD.87.092001
ISSN: 1550-7998
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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