Search for the decay Bs -> D*-+ π+-

Abstract

A search for the decay Bs -> D*-+ π+- is presented using a data sample corresponding to an integrated luminosity of 1.0 fb-1 of pp collisions collected by LHCb. This decay is expected to be mediated by a W-exchange diagram, with little contribution from rescattering processes, and therefore a measurement of the branching fraction will help to understand the mechanism behind related decays such as Bs -> π+ π- and Bs -> D Dbar. Systematic uncertainties are minimised by using B0 -> D*-+ π+- as a normalisation channel. We find no evidence for a signal, and set an upper limit on the branching fraction of BR(Bs -> D*-+ π+-) < 6.1 (7.8) x10^(-6) at 90% (95%) confidence level.

References in corpus (27)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• A Unified Approach to the Classical Statistical Analysis of Small Signals
• sPlot: a statistical tool to unfold data distributions
• The LHCb Trigger and its Performance in 2011
• Performance of the LHCb RICH detector at the LHC
• The Physics of the B Factories
• Charmless non-leptonic B_s decays to PP, PV and VV final states in the pQCD approach
• A Measurement of the Branching Fraction for the Inclusive B --> X(s) gamma Decays with the Belle Detector
• Broken SU(3) Symmetry in Two-Body B Decays
• Measurement of the fragmentation fraction ratio $f_s/f_d$ and its dependence on $B$ meson kinematics
• Two body B decays with isosinglet final states in SCET
• QCD Factorization for Charmless Hadronic B_s Decays Revisited
• Updating B --> PP, VP decays in the framework of flavor symmetry
• New Strategies to Obtain Insights into CP Violation Through $B_s\to D_s^{\pm }{K}^{\mp },D_s^{\ast \pm }{K}^{\mp },...$ and $B_d\to D^{\pm }{\pi }^{\mp },D^{\ast \pm }{\pi }^{\mp },...$ Decays
• Measurement of Branching Fractions for B->ππ, Kπand KK Decays
• Measurement of $b$-hadron branching fractions for two-body decays into charmless charged hadrons
• Observation of CP violation in B^0 -> eta' K^0 Decays
• Measurements of Branching Fractions of $\tau$ Lepton Decays with one or more $K_S^0$
• Precise measurement of the branching fractions for Bs->Ds(*)+ Ds(*)- and first measurement of the Ds*+ Ds*- polarization using e+e- collisions
• Observation of the decay B0 -> D0bar K+ K- and evidence for Bs -> D0bar K+ K-
• Rescattering Contributions to rare B-Meson Decays
• First observations of ${\bar{B}}_s^0\to D^{+}{D}^{-}$, $D_s^{+}{D}^{-}$ and $D^0{\bar{D}}^0$ decays
• Evidence for B-> eta' pi and improved measurements for B-> eta' K
• First observation of the decay ${\bar{B}}_s^0\to D^0{K}^{\ast 0}$ and a measurement of the ratio of branching fractions $\frac{\mathcal{B}({\bar{B}}_s^0\to D^0{K}^{\ast 0})}{\mathcal{B}({\bar{B}}^0\to D^0{\rho }^0)}$
• First evidence for the annihilation decay mode $B^{+}\to D_s^{+}\varphi$
• Branching fraction measurement of B0 --> D(*)- pi+, B- --> D(*)0 pi- and isospin analysis of B --> D(*) pi decays

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