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2007-10-05

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/131454

Measurement of CP asymmetry in B0 → K0sπ0π0 decays

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Abstract

We present a measurement of the time-dependent C P asymmetry for the neutral B -meson decay into the C P = + 1 final state K 0 S π 0 π 0 , with K 0 S → π + π − . We use a sample of approximately 227 million B -meson pairs recorded at the Υ ( 4 S ) resonance with the BABAR detector at the PEP-II B -Factory at SLAC. From an unbinned maximum likelihood fit, we extract the mixing-induced C P -violation parameter S = 0.72 ± 0.71 ± 0.08 and the direct C P -violation parameter C = 0.23 ± 0.52 ± 0.13 , where the first uncertainty is statistical and the second systematic.

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https://doi.org/10.1103/PhysRevD.76.071101

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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 CP asymmetry in B0 → K0sπ0π0 decays. Physical Review D. 2007. Vol. 76, num. 7, pags. 071101(R). ISSN 1550-7998. [consulted: 8 of October of 2026]. Available at: https://hdl.handle.net/2445/131454

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