Search for CPT and Lorentz Violation in $B^0-\bar{B^0}$ Oscillations with Dilepton Events

Abstract : 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.
Document type :
Journal articles
Physical Review Letters, American Physical Society, 2008, 100, pp.131802. <10.1103/PhysRevLett.100.131802>

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Contributor : Claudine Bombar <>
Submitted on : Monday, April 14, 2008 - 2:40:32 PM
Last modification on : Wednesday, July 27, 2016 - 2:48:48 PM

Citation

B. Aubert, M. Bona, D. Boutigny, Y. Karyotakis, J.P. Lees, et al.. Search for CPT and Lorentz Violation in $B^0-\bar{B^0}$ Oscillations with Dilepton Events. Physical Review Letters, American Physical Society, 2008, 100, pp.131802. <10.1103/PhysRevLett.100.131802>. <in2p3-00273104>

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