Measurement of The Time-Dependent CP Asymmetry in B0 --> K*0 gamma Decays

2007/08/12 by The BABAR Collaboration, B. Aubert, Aubert, B.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Neutrino Physics Research #Nuclear physics research studies #Particle physics theoretical and experimental studies #hep-ex

paper · pdf · doi:10.48550/arxiv.0708.1614

14 pages, 3 figures, contributed to LP07

arxiv created 2007/08/12 · openalex publication_date 2007/08/12 · arxiv updated 2009/12/01 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28

Abstract

We present a preliminary measurement of the time-dependent CP asymmetry in B0 --> K*0 (K_S0 pi0) gamma decays based on 431 x 10⁶ Upsilon(4S) --> BBbar decays collected with the BaBar detector at the PEP-II asymmetric-energy e+e- collider at SLAC. In a sample containing 316 +/- 22 signal events we measure S_{K* gamma} = -0.08 +/- 0.31 +/- 0.05 and C_{K* gamma} = -0.15 +/- 0.17 +/- 0.03. The uncertainties are statistical and systematic, respectively.

Related

• Measurement of Time-dependent CP Asymmetries in B0 -> K0S K0S K0S Decay
• Measurement of Time-dependent CP-Violating Asymmetries in B⁰ -> K⁰_S K⁰_S K⁰_S Decays
• Measurement of CP Asymmetries in B0-> KS pi0 pi0 Decays
• Measurement of Branching Fractions and CP and Isospin Asymmetries in B -> K* gamma
• Measurement of Time-dependent CP-Violating Asymmetries in B0 -> K+K-K0L Decays