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

Resultado de la investigaciónrevisión exhaustiva

29 Citas (Scopus)

Resumen

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.

Idioma originalEnglish
Número de artículo092001
PublicaciónPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volumen84
N.º9
DOI
EstadoPublished - 2 nov. 2011
Publicado de forma externa

All Science Journal Classification (ASJC) codes

  • Física nuclear y de alta energía
  • Física y astronomía (miscelánea)

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