A search for the decay Bs0→D * â̂π ± 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 us to understand the mechanism behind related decays such as Bs0→π +π - and Bs0→DD̄. Systematic uncertainties are minimized by using B0→D *â̂π ± as a normalization channel. We find no evidence for a signal, and set an upper limit on the branching fraction of B(Bs0→D * â̂π ±)<6.1(7.8)×10 -6 at 90% (95%) confidence level.
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|Publication status||Published - 23 Apr 2013|
Copyright 2013 Elsevier B.V., All rights reserved.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)