# Measurements of the Branching fractions for $B_(s) -> D_(s)\pi\pi\pi$ and $\Lambda_b^0 -> \Lambda_c^+\pi\pi\pi$

Abstract : Branching fractions of the decays $H_b\to H_c\pi^-\pi^+\pi^-$ relative to $H_b\to H_c\pi^-$ are presented, where $H_b$ ($H_c$) represents B^0-bar($D^+$), $B^-$ ($D^0$), B_s^0-bar ($D_s^+$) and $\Lambda_b^0$ ($\Lambda_c^+$). The measurements are performed with the LHCb detector using 35${\rm pb^{-1}}$ of data collected at $\sqrt{s}=7$ TeV. The ratios of branching fractions are measured to be B(B^0-bar -> D^+\pi^-\pi^+\pi^-)/ B(B^0-bar -> D^+\pi^-) = 2.38\pm0.11\pm0.21 B(B^- -> D^0\pi^-\pi^+\pi^-) / B(B^- -> D^0\pi^-) = 1.27\pm0.06\pm0.11 B(B_s^0-bar -> D_s^+\pi^-\pi^+\pi^-) / B(B_s^0-bar -> D_s^+\pi^-) = 2.01\pm0.37\pm0.20 B(\Lambda_b^0->\Lambda_c^+\pi^-\pi^+\pi^-) / B(\Lambda_b^0 -> \Lambda_c^+\pi^-) = 1.43\pm0.16\pm0.13. 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.
Document type :
Journal articles
Domain :

http://hal.in2p3.fr/in2p3-00630216
Contributor : Claudine Bombar <>
Submitted on : Friday, October 7, 2011 - 4:27:35 PM
Last modification on : Tuesday, July 13, 2021 - 11:52:04 AM

### Citation

R. Aaij, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, et al.. Measurements of the Branching fractions for $B_(s) -> D_(s)\pi\pi\pi$ and $\Lambda_b^0 -> \Lambda_c^+\pi\pi\pi$. Physical Review D, American Physical Society, 2011, 84, pp.092001. ⟨10.1103/PhysRevD.84.092001⟩. ⟨in2p3-00630216⟩

Record views