Study on the ϒ(1S)→BcDs decay

The branching ratio and direct CP   asymmetry of the ϒ(1S)→BcDsϒ(1S)→BcDs weak decay are estimated with the perturbative QCD approach firstly. It is found that (1) the direct CP  -violating asymmetry is close to zero, (2) the branching ratio Br(ϒ(1S)→BcDs)≳10−10Br(ϒ(1S)→BcDs)≳10−10 might be measurable at the future experiments.