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Title: | Evidence for CP Violation in B0→J/ψπ0 Decays |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 10-Jul-2008 |
Publisher: | American Physical Society |
Abstract: | We present measurements of the branching fraction and time-dependent C P asymmetries in B 0 → J / ψ π 0 decays based on 466 × 10 6 Υ ( 4 S ) → B ¯¯¯ B events collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. We measure the C P asymmetry parameters S = − 1.23 ± 0.21 ( stat ) ± 0.04 ( syst ) and C = − 0.20 ± 0.19 ( stat ) ± 0.03 ( syst ) , where the measured value of ( S , C ) is 4.0 standard deviations from (0, 0) including systematic uncertainties. The branching fraction is determined to be B ( B 0 → J / ψ π 0 ) = [ 1.69 ± 0.14 ( stat ) ± 0.07 ( syst ) ] × 10 − 5 . |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.101.021801 |
It is part of: | Physical Review Letters, 2008, vol. 101, num. 2, p. 021801 |
URI: | http://hdl.handle.net/2445/139351 |
Related resource: | https://doi.org/10.1103/PhysRevLett.101.021801 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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