A Novel Possibility to Determine the CP-violating Phase γand the B^0_s-\bar{B}^0_s Mixing Parameter y_s at the Υ(5S) Resonance
arXiv:hep-ph/0004120 · doi:10.1016/S0370-2693(00)00875-3
Abstract
We show that a CP-violating phase can be model-independently determined from the time-independent measurement of coherent B^0_s\bar{B}^0_s decays into (D^{(*)\pm}_s K^{(*)\mp})(D^{(*)\pm}_s K^{(*)\mp}) states at the Υ(5S) resonance. This phase amounts to (-γ) within the standard model, where γis the well-known angle of the quark mixing unitarity triangle. It is also possible to determine or constrain the B^0_s-\bar{B}^0_s mixing parameter y_s from the same measurement.
LaTex 6 pages (1 figure included)