Measurement of branching fraction and CP asymmetries in B->D0(cp)K decays

2007/08/11 by The BABAR Collaboration, B. Aubert, Aubert, B.
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle Accelerators and Free-Electron Lasers #Particle physics theoretical and experimental studies #Superconducting Materials and Applications

paper · pdf · doi:10.48550/arxiv.0708.1534

openalex publication_date 2007/08/11 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28

Abstract

We present a preliminary study of B^- → D⁰_CP π^- and B^- → D⁰_CP K^- decays, with the D⁰_CP reconstructed in the CP-odd eigenstates K_s π⁰, K_s ω, in the CP-even eigenstates K⁺ K^-, π⁺ π^-, and in the (non-CP) flavor eigenstate K^∓ π^±. Using a sample of about 382 million Y(4S) decays into BBbar pairs, collected with the BABAR detector operating at the PEP-II asymmetric-energy B Factory at SLAC, we measure the ratios of the branching fractions R_CP+- and the direct CP asymmetries A_CP+-. The results are: R_CP- = 0.81 ± 0.10 (stat) ± 0.05 (syst) R_CP+ = 1.07 ± 0.10 (stat) ± 0.04 (syst) A_CP- = -0.19 ± 0.12 (stat) ± 0.02 (syst) A_CP+ = 0.35 ± 0.09 (stat) ± 0.05 (syst)

Related

• Measurement of the Branching Fractions and CP Asymmetries of B-->D0(cp)K- Decays with the BaBar detector
• Measurement of Branching Ratios and CP Asymmetries in B- -> D0(CP)K- Decays
• Measurement of Time-Dependent CP Asymmetries and the CP-odd Fraction in the Decay B⁰ --> D^*+D^*-
• Measurement of the Ratio BR(B- --> D*0 K-)/BR(B- --> D*0 pi-) and the CP-asymmetry of B- --> D*0(CP+) K- decays with the BABAR detector
• Measurement of CP-Asymmetries for the Decays B+/- to D_cp Kstar+/- with the BABAR Detector