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Título: | Observation of direct CP violation in the measurement of the Cabibbo-Kobayashi-Maskawa angle γ with B±→D(*)K(*)± decays |
Autor: | Graugés Pous, Eugeni BABAR Collaboration |
Materia: | Física de partícules Experiments Particle physics Experiments |
Fecha de publicación: | 1-mar-2013 |
Publicado por: | American Physical Society |
Resumen: | We report the determination of the Cabibbo-Kobayashi-Maskawa C P -violating angle γ through the combination of various measurements involving B ± → D K ± , B ± → D ∗ K ± , and B ± → D K * ± decays performed by the BABAR experiment at the PEP-II e + e − collider at SLAC National Accelerator Laboratory. Using up to 474 million B ¯¯¯ B pairs, we obtain γ = ( 69 + 17 − 16 ) ° modulo 180°. The total uncertainty is dominated by the statistical component, with the experimental and amplitude-model systematic uncertainties amounting to ± 4 ° . The corresponding two-standard-deviation region is 41 ° < γ < 102 ° . This result is inconsistent with γ = 0 with a significance of 5.9 standard deviations. |
Nota: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.87.052015 |
Es parte de: | Physical Review D, 2013, vol. 87, num. 5, p. 052015 |
URI: | https://hdl.handle.net/2445/131827 |
Recurso relacionado: | https://doi.org/10.1103/PhysRevD.87.052015 |
ISSN: | 1550-7998 |
Aparece en las colecciones: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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