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

Abstract

We present an updated measurement of time-dependent \CP asymmetries and the \CP-odd fraction in the decay $B^0\to D^{\ast +}{D}^{\ast -}$ using $232 \times 10^{6} \BB$ pairs collected by the \babar detector at the PEP-II $B$ factory. We determine the \CP-odd fraction to be $0.125 \pm 0.044\stat \pm 0.007\syst$. The time-dependent \CP asymmetry parameters $C_{+}$ and $S_{+}$ are determined to be $0.06\pm 0.17\stat \pm 0.03\syst$ and $-0.75 \pm 0.25\stat \pm 0.03\syst$, respectively. The Standard Model predicts these parameters to be 0 and $-\stwob$, respectively, in the absence of penguin amplitude contributions.

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References in corpus (3)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Improved Measurement of CP Asymmetries in B0 -> (ccbar)K0(*) Decays
• Branching Fraction, Polarization and CP-Violating Asymmetries in B0 -> D*+ D*- Decays

Cited by in corpus (6)

• 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
• Nonleptonic Weak Decays of B to D_s and D mesons
• Improved Measurement of Time-Dependent CP Asymmetries and the CP-Odd Fraction in the Decay B0->D*+D*-
• Probing scalar particle and unparticle couplings in e+ e- -> t tbar with transversely polarized beams