Decays, Triggers, Decay vertex, Time resolution, Background rejection
The decay mode Bs à ψ K*is suggested as a very good way to measure the Bs mixing parameter xs. These decays can be gathered using a ψ → ℓ+ℓ− trigger. This final state has a well resolved four track decay vertex, useful for good time resolution and background rejection.
McBride, Patricia and Stone, Sheldon, "B_s Mixing Via ψ K*" (1995). Physics. 56.
Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.