Evidence for CP violation in B0->J/Psi pi0 decays
High Energy Physics - Experiment
2010-04-12 v1
Abstract
We present measurements of the branching fraction and time-dependent CP asymmetries in B0->J/Psi pi0 decays based on 466 million Y(4S)->BBbar events collected with the BaBar detector at the SLAC PEP-II asymmetric-energy B factory. We measure the CP asymmetry parameters S=-1.23 +/- 0.21 +/- 0.04 and C=-0.20 +/- 0.19 +/- 0.03, where the measured value of S is 4.0 standard deviations from zero including systematic uncertainties. The branching fraction is determined to be B(B0->J/Psi pi0)=(1.69 +/- 0.14 +/- 0.07)*10^{-5}.
Cite
@article{arxiv.0804.0896,
title = {Evidence for CP violation in B0->J/Psi pi0 decays},
author = {B. Aubert},
journal= {arXiv preprint arXiv:0804.0896},
year = {2010}
}
Comments
Submitted to Phys. Rev. Lett