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.

Search for CPT and lorentz violation in B(0)-(B)over-bar(0) oscillations with dilepton events RID C-5223-2009 RID C-5719-2008 RID D-1055-2009

CALDERINI, GIOVANNI;ANGELINI, CARLO;BATIGNANI, GIOVANNI;BETTARINI, STEFANO;FORTI, FRANCESCO;GIORGI, MARCELLO;PAOLONI, EUGENIO;RIZZO, GIULIANA;
2008

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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