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Title: | Measurements of the branching fractions for B(s)→D(s)πππ and Λ0b→Λ+cπππ |
Author: | Camboni, Alessandro Enterria i Adan, David G. d' Garrido Beltrán, Lluís Grabalosa Gándara, Marc Graciani Díaz, Ricardo Graugés Pous, Eugeni López Asamar, Elias Musy, Marco Pérez-Calero Yzquierdo, Antonio Pie Valls, B. (Blai) Potterat, Cédric Puig Navarro, Albert Ruiz, Hugo (Ruiz Pérez) Vázquez Gómez, Ricard Vilasis-Cardona, Xavier LHCb Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 2-Nov-2011 |
Publisher: | American Physical Society |
Abstract: | Branching fractions of the decays H b → H c π − π + π − relative to H b → H c π − are presented, where H b ( H c ) represents ¯¯¯ B 0 ( D + ), B − ( D 0 ), ¯¯¯ B 0 s ( D + s ), and Λ 0 b ( Λ + c ). The measurements are performed with the LHCb detector using 35 pb − 1 of data collected at √ s = 7 TeV . The ratios of branching fractions are measured to be [ B ( ¯¯¯ B 0 → D + π − π + π − ) ] / [ B ( ¯¯¯ B 0 → D + π − ) ] = 2.38 ± 0.11 ± 0.21 , [ B ( B − → D 0 π − π + π − ) ] / [ B ( B − → D 0 π − ) ] = 1.27 ± 0.06 ± 0.11 , [ B ( ¯¯¯ B 0 s → D + s π − π + π − ) ] / [ B ( ¯¯¯ B 0 s → D + s π − ) ] = 2.01 ± 0.37 ± 0.20 , [ B ( Λ 0 b → Λ + c π − π + π − ) ] / [ B ( Λ 0 b → Λ + c π − ) ] = 1.43 ± 0.16 ± 0.13 We also report measurements of partial decay rates of these decays to excited charm hadrons. These results are of comparable or higher precision than existing measurements. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.84.092001 |
It is part of: | Physical Review D, 2011, vol. 84, num. 9, p. 092001 |
URI: | http://hdl.handle.net/2445/131720 |
Related resource: | https://doi.org/10.1103/PhysRevD.84.092001 |
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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