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Title: Search for CPT and Lorentz Violation in B0−¯¯¯B0 Oscillations with Dilepton Events
Author: Garra Ticó, Jordi
Graugés Pous, Eugeni
BABAR Collaboration
Keywords: Física de partícules
Particle physics
Issue Date: 4-Apr-2008
Publisher: American Physical Society
Abstract: We report results of a search for C P T and Lorentz violation in B 0 − ¯¯¯ B 0 oscillations using inclusive dilepton events from 232 × 10 6 Υ ( 4 S ) → B ¯¯¯ B decays recorded by the BABAR detector at the PEP-II B Factory at SLAC. We find 2.8 σ significance, compatible with no signal, for variations in the complex C P T violation parameter z at the Earth's sidereal frequency and extract values for the quantities Δ a μ in the general Lorentz-violating standard-model extension. The spectral powers for variations in z over the frequency range 0.26     yr − 1 to 2.1     solar   da y − 1 are also compatible with no signal.
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2008, vol. 100, num. 13, p. 131802
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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