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Published version

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2005-10-04

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/140642

Improved Measurements of CP-Violating Asymmetry Amplitudes in B0→π+π− Decays

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https://doi.org/10.1103/PhysRevLett.95.151803

Abstract

We present updated measurements of the C P -violating parameters S π π and C π π in B 0 → π + π − decays. Using a sample of 227 × 10 6 Υ ( 4 S ) → B ¯¯¯ B decays collected with the BABAR detector at the PEP-II asymmetric-energy e + e − collider at SLAC, we observe 467 ± 33 signal decays and measure S π π = − 0.30 ± 0.17 ( stat ) ± 0.03 ( syst ) and C π π = − 0.09 ± 0.15 ( stat ) ± 0.04 ( syst ) .

Subject

Física de partícules, Experiments

Subject (English)

Particle physics, Experiments

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

GRAUGÉS POUS, Eugeni and BABAR Collaboration. Improved Measurements of CP-Violating Asymmetry Amplitudes in B0→π+π− Decays. Physical Review Letters. 2005. Vol. 95, num. 15, pags. 151803. ISSN 0031-9007. [consulted: 8 of June of 2026]. Available at: https://hdl.handle.net/2445/140642

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