We present an updated measurement of the CP-odd fraction and the time-dependent CP asymmetries in the decay B-0 -> D*D+*(-) using (383 +/- 4)x10(6)B (B) over bar pairs collected with the BABAR detector. We determine the CP-odd fraction to be 0.143 +/- 0.034(stat)+/- 0.008(syst). The time-dependent CP asymmetry parameters are determined to be C+=-0.05 +/- 0.14(stat)+/- 0.02(syst) and S+=-0.72 +/- 0.19(stat)+/- 0.05(syst). The nonzero value of the measured S+ indicates the evidence of CP violation at the 3.7 sigma confidence level.

Improved measurement of time-dependent CP asymmetries and the CP-odd fraction in the decay B-0 -> D*D+*(-)

Baracchini E;Ferroni F;
2007

Abstract

We present an updated measurement of the CP-odd fraction and the time-dependent CP asymmetries in the decay B-0 -> D*D+*(-) using (383 +/- 4)x10(6)B (B) over bar pairs collected with the BABAR detector. We determine the CP-odd fraction to be 0.143 +/- 0.034(stat)+/- 0.008(syst). The time-dependent CP asymmetry parameters are determined to be C+=-0.05 +/- 0.14(stat)+/- 0.02(syst) and S+=-0.72 +/- 0.19(stat)+/- 0.05(syst). The nonzero value of the measured S+ indicates the evidence of CP violation at the 3.7 sigma confidence level.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12571/1867
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