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 original | English |
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Número de artículo | 092001 |
Publicación | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volumen | 84 |
N.º | 9 |
DOI | |
Estado | Published - 2 nov. 2011 |
Publicado de forma externa | Sí |
All Science Journal Classification (ASJC) codes
- Física nuclear y de alta energía
- Física y astronomía (miscelánea)