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2007-02-02

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/140339

Measurement of the CP Asymmetry and Branching Fraction of B0→ρ0K0

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https://doi.org/10.1103/PhysRevLett.98.051803

Abstract

We present a measurement of the branching fraction and time-dependent C P asymmetry of B 0 → ρ 0 K 0 . The results are obtained from a data sample of 227 × 10 6 Υ ( 4 S ) → B ¯¯¯ B decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at Stanford Linear Accelerator Center. From a time-dependent maximum likelihood fit yielding 111 ± 19 signal events, we find B ( B 0 → ρ 0 K 0 ) = ( 4.9 ± 0.8 ± 0.9 ) × 10 − 6 , where the first error is statistical and the second systematic. We report the measurement of the C P parameters S ρ 0 K 0 S = 0.20 ± 0.52 ± 0.24 and C ρ 0 K 0 S = 0.64 ± 0.41 ± 0.20 .

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Física de partícules, Experiments

Subject (English)

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 the CP Asymmetry and Branching Fraction of B0→ρ0K0. Physical Review Letters. 2007. Vol. 98, num. 5, pags. 051803. ISSN 0031-9007. [consulted: 14 of August of 2026]. Available at: https://hdl.handle.net/2445/140339

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