Improved Measurement of Time-Dependent CP Asymmetries and the CP-Odd Fraction in the Decay B0->D*+D*-

Abstract

We present an updated measurement of the CP-odd fraction and the time-dependent CP asymmetries in the decay B0->D*+D*-using (383 +/- 4) \times 10^{6} BB pairs collected with the Babar detector. We determine the CP-odd fraction to be $0.143\pm0.034\stat\pm0.008\syst$. The time-dependent CP asymmetry parameters are determined to be $C_+ = -0.05\pm 0.14\stat \pm 0.02\syst$ and $S_+ = -0.72 \pm 0.19\stat \pm 0.05\syst$. The non-zero value of the measured $S_{+}$ indicates the evidence of CP violation at the $3.7\sigma$ confidence level.

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References in corpus (5)

• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The Cosmological Parameters 2006
• Measurement of CP-Violating Asymmetries in B0->D(*)+D-
• Evidence for CP Violation in B0 -> D+D- Decays
• Measurement of Branching Fractions and CP-Violating Charge Asymmetries for B Meson Decays to D(*)D(*), and Implications for the CKM Angle gamma

Cited by in corpus (6)

• The Physics of the B Factories
• Decays of $B$ meson to two charmed mesons
• Measurements of time-dependent CP asymmetries in B0 --> D(*)+D(*)- decays
• Studying Double Charm Decays of B_{u,d} and B_{s} Mesons in the MSSM with R-parity Violation
• The double charm decays of B Mesons in the mSUGRA model
• CKM-UT Angles: Mixing and CP violation at the $B$ Factories