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;
2007-01-01
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.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
