Searches for CP, T and CPT violation in B0B0bar mixing at BaBar

TL;DR

This paper reports measurements of CP and CPT violation parameters in B0-B0bar mixing at BaBar, using two different reconstruction methods, with results consistent with Standard Model predictions.

Contribution

It provides the first measurements of CP and CPT violation parameters in B0-B0bar mixing using two independent reconstruction techniques at BaBar.

Findings

Results agree with Standard Model predictions.

Measurements from two methods are consistent with each other.

No evidence of CP or CPT violation beyond Standard Model expectations.

Abstract

We describe measurements of CP and CPT violation parameters in B^0B^0bar oscillations, performed at BaBar by using BBbar events collected at the Y(4S) mass peak. These are obtained from two different B-reconstruction methods, namely: searching for two inclusive semileptonic B^0 decays in an event or partially reconstructing one of the B^0 mesons in the D* l nu_l channel. The results are in agreement with one another and with the most recent theoretical calculations in the Standard Model scenario.