Measurements of the branching fractions for B<inf>(s)</inf>→D <inf>(s)</inf>πππ and Λb0→Λc+πππ

R. Aaij, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, Y. Amhis, J. Anderson, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, L. Arrabito, A. ArtamonovM. Artuso, E. Aslanides, G. Auriemma, S. Bachmann, J. J. Back, D. S. Bailey, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, A. Bates, C. Bauer, Th Bauer, A. Bay, I. Bediaga, K. Belous, I. Belyaev, E. Ben-Haim, M. Benayoun, G. Bencivenni, S. Benson, J. Benton, R. Bernet, M. O. Bettler, M. Van Beuzekom, A. Bien, S. Bifani, A. Bizzeti, P. M. Bjørnstad, T. Blake, F. Blanc, C. Blanks, J. Blouw, S. Blusk, A. Bobrov, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, A. Borgia, T. J.V. Bowcock, C. Bozzi, T. Brambach, J. Van Den Brand, J. Bressieux, D. Brett, S. Brisbane, M. Britsch, T. Britton, N. H. Brook, H. Brown, A. Büchler-Germann, I. Burducea, A. Bursche, J. Buytaert, S. Cadeddu, J. M. Caicedo Carvajal, O. Callot, M. Calvi, M. Calvo Gomez, A. Camboni, P. Campana, A. Carbone, G. Carboni, R. Cardinale

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22 Citations (Scopus)

Abstract

Branching fractions of the decays H bH cπ -π +π - relative to H b→ H cπ - are presented, where H b (H c) represents B ̄0 (D +), B - (D0), B̄s0 (Ds+), and Λb0 (Λc+). The measurements are performed with the LHCb detector using 35pb -1 of data collected at √s=7TeV. 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 -→D0π -π +π -)]/[B(B -→D0π -)]=1.27±0.06±0.11, [B(B̄s0→Ds+π -π +π -)]/ [B(B̄s0→Ds+π -)]=2.01±0.37±0.20, [B(Λb0→Λc+π -π +π -)]/ [B(Λb0→Λc+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.

Original languageEnglish
Article number092001
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume84
Issue number9
DOIs
Publication statusPublished - 2 Nov 2011
Externally publishedYes

Bibliographical note

Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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