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2005-10-05

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/141361

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

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https://doi.org/10.1103/PhysRevLett.95.151804

Abstract

We present an updated measurement of time-dependent C P asymmetries and the C P -odd fraction in the decay B 0 → D * + D * − using 232 × 10 6 B ¯¯¯ B pairs collected by the BABAR detector at the SLAC PEP-II B factory. We determine the C P -odd fraction to be 0.125 ± 0.044 ( stat ) ± 0.007 ( syst ) . The time-dependent C P asymmetry parameters C + and S + are determined to be 0.06 ± 0.17 ( stat ) ± 0.03 ( syst ) and − 0.75 ± 0.25 ( stat ) ± 0.03 ( syst ) , respectively. The standard model predicts these parameters to be 0 and − sin  2 β , respectively, in the absence of penguin amplitude contributions.

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Física de partícules, Experiments

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Particle physics, Experiments

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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GRAUGÉS POUS, Eugeni and BABAR Collaboration. Measurement of Time-Dependent CP Asymmetries and the CP-Odd Fraction in the Decay B0→D∗+D*−. Physical Review Letters. 2005. Vol. 95, num. 15, pags. 151804. ISSN 0031-9007. [consulted: 16 of June of 2026]. Available at: https://hdl.handle.net/2445/141361

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