Measurements of the Branching fractions for Bs→Dsπππ and Λ0b→Λ+cπππ.

The LHCb Collaboration

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Abstract / Description of output

Branching fractions of the decays Hb→Hcπ−π+π− relative to Hb→Hcπ− are presented, where Hb (Hc) represents B^0-bar(D+), B− (D0), B_s^0-bar (D+s) and Λ0b (Λ+c). The measurements are performed with the LHCb detector using 35pb−1 of data collected at 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.
Original languageEnglish
JournalPhysical Review D, particles, fields, gravitation, and cosmology
DOIs
Publication statusPublished - 3 Oct 2011

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