Search for CPT and Lorentz Violation in B0-B0bar Oscillations with Dilepton Events

Details Search for CPT and Lorentz Violation in B0-B0bar Oscillations with Dilepton Events Search for CPT and Lorentz Violation in B0-B0bar Oscillations with Dilepton Events

2007-11-17

arxiv.org/abs/0711.2713v1

Phys.Rev.Lett.100:131802,2008

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 3 postscript figures, submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevLett.100.131802

We report results of a search for CPT and Lorentz violation in B0-B0bar oscillations using inclusive dilepton events from 232 million Y(4S) --> BBbar decays recorded by the BABAR detector at the PEP-II B Factory at SLAC. We find 2.8sigma 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/year to 2.1/day are also compatible with no signal.

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