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

Details 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 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

2000-04-13

arxiv.org/abs/hep-ph/0004120v1

Phys.Lett. B488 (2000) 162-166

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTex 6 pages (1 figure included)

Scientific paper

10.1016/S0370-2693(00)00875-3

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 \Upsilon (5S) resonance. This phase amounts to (-\gamma) within the standard model, where \gamma is 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.

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