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Search for CPT and lorentz violation in B-0-(B)over-bar(0) oscillations with dilepton events
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BABAR Collaboration (Including: Harrison, P. F., Ilić, Jelena, Latham, Thomas and Mohanty, G. B.). (2008) Search for CPT and lorentz violation in B-0-(B)over-bar(0) oscillations with dilepton events. Physical Review Letters, Vol.100 (No.13). doi:10.1103/PhysRevLett.100.131802 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.100.131802
Abstract
We report results of a search for CPT and Lorentz violation in B-0-(B) over bar (0) oscillations using inclusive dilepton events from 232x10(6) Upsilon(4S)-> B (B) over bar decays recorded by the BABAR detector at the PEP-II B Factory at SLAC. We find 2.8 sigma significance, compatible with no signal, for variations in the complex CPT violation parameter z at the Earth's sidereal frequency and extract values for the quantities Delta a(mu) 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 day(-1) are also compatible with no signal.
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