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

Abstract

We present a measurement of time-dependent CP asymmetries and an updated determination of the CP-odd fraction in the decay B0 --> D*+D*- using a data sample of 88 x 10^6 BBbar pairs collected by the BABAR detector at the PEP-II B Factory at SLAC. We determine the CP-odd fraction to be 0.063 +/- 0.055(stat) +/- 0.009(syst). The time-dependent CP asymmetry parameters $Im({\lambda }_{+})$ and $|{\lambda }_{+}|$ are determined to be 0.05 +/- 0.29(stat) +/- 0.10(syst) and 0.75 +/- 0.19(stat) +/- 0.02(syst), respectively. The Standard Model predicts these parameters to be -sin2beta and 1, respectively, in the absence of penguin diagram contributions.

7 pages, 2 postscript figues, submitted to PRL

References in corpus (9)

• The BABAR Detector
• Observation of Large CP Violation in the Neutral B Meson System
• Observation of CP violation in the B^0 meson system
• Measurement of the CP-Violating Asymmetry Amplitude sin2beta
• A Study of Time-Dependent CP-Violating Asymmetries and Flavor Oscillations in Neutral B Decays at the Upsilon(4S)
• CP Violation in B_d \to D^+D^-, D^{*+}D^-, D^+D^{*-} and D^{*+}D^{*-} Decays
• Towards Determining ϕ_1 with B\to D^(*)\bar{D}^(*)
• CP Asymmetries in B_d \to D^{*+}D^{*-} and B_s \to D^{*+}_s D^{*-}_s Decays: P-wave Dilution, Penguin and Rescattering Effects
• Measurement of the Branching Fraction and CP Content for the Decay B0 --> D*+ D*-

Cited by in corpus (9)

• Polarizations in B -> VV decays
• Time-Dependent CP Violation in $B^0\to P^0{P}^0{X}^0$ Decays
• Measurement of Branching Fractions and CP-Violating Charge Asymmetries for B Meson Decays to D(*)D(*), and Implications for the CKM Angle gamma
• Factorization and polarization in two charmed-meson B decays
• Branching Fraction, Polarization and CP-Violating Asymmetries in B0 -> D*+ D*- Decays
• Extracting γfrom Bd(t) -> D(*)+ D(*)- and Bd -> Ds(*)+ D(*)- Decays
• Measurement of Time-Dependent CP Asymmetries and the CP-Odd Fraction in the Decay B0->D*+D*-
• A Measurement of gamma from the Decays Bd(t) -> D(*)+ D(*)- and Bd -> Ds(*)+ D(*)-
• Stokes Vector of Photon in the Decays B^0 -> rho^0 gamma and B^0 -> K^* gamma