Search for T, CP and CPT Violation in B0-B0bar Mixing with Inclusive Dilepton Events

The authors report the results of a search for T, CP and CPT violation in B0-(bar B)0 mixing using an inclusive dilepton sample collected by the BABAR experiment at the PEP-II B Factory. Using a sample of 232 million B(bar B) pairs, with a simultaneous likelihood fit of the same-sign and opposite-sign dileptons, they measure the T and Cp violation parameter |q/p|-1 = (-0.8 ± 2.7(stat.) ± 1.9(syst.)) x 10-3, and the CPT and CP parameters Im z = (-13.9 ± 7.3(stat.) ± 3.2(syst.)) x 10-3 and ΔΛ x Re z = (-7.1 ± 3.9(stat.) ± 2.0(syst.)) x 10-3 ps-1. The statistical correlation between the measurements of Im z and ΔΛ x Re z is 76%