Abstract
A search for the decay B0s→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 B0s→π+π− and B0s→DD−−. 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 B(B0s→D∗∓π±)<6.1(7.8)×10−6 at 90% (95%) confidence level.
Original language | English |
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Pages (from-to) | 071101 |
Number of pages | 1 |
Journal | Physical Review D, particles, fields, gravitation, and cosmology |
Volume | D87 |
Early online date | 26 Feb 2013 |
DOIs | |
Publication status | Published - 23 Apr 2013 |