B_s --> D_(s)h(h)(h) Decays in LHCb

Abstract

We report recent measurements from LHCb on $B_{(s)}\to D_{(s)}h(h)(h)$ decays using $\sim$35 pb${}^{-1}$ of data collected in 2010. In brief, we measure the following ratios of branching fractions: B(B^0-bar --> D^+K^-) / B(B0-bar --> D^+ pi^-) = 0.0752 +- 0.0064 +- 0.0026 B(B_s-bar --> D^0 K^{*0}) / B(B^0-bar --> D^0 rho^0) = 1.39 +- 0.31 +- 0.17 +- 0.18 B(B^0-bar --> D^+ K^- pi^+ pi^-) / B(B^0-bar --> D^+ pi^- pi^+ pi^-) = 0.052 +- 0.009 +- 0.005 B(B^- --> D^0 K^- pi^+ pi^-) / B(B^- --> D^0 pi^- pi^+ pi^-) = 0.096 +- 0.015 +- 0.008, where the uncertainties are statistical and systematic, respectively. The first of these measurements is the most precise to date, and the others are first observations.

Comments: 7 pages, 4 figures; Proceedings of BEAUTY 2011, 13th International Conference on B-Physics at Hadron Machines, April 4th-8th 2011, Amsterdam, The Netherlands