Semi-inclusive studies of semileptonic $B_s$ decays at Belle.

Abstract

We present an analysis of the semi inclusive Bs -> Ds X l nu and Ds*X l nu where X denotes a final state that may consist of additional hadrons or photons and l is an electron or muon. The studied Bs decays are contained in the 121.4 fb^−1 Upsilon (5S) data sample collected by the Belle detector at the KEKB asymmetric energy e+e- collider.