Evidence for CP violation in B0->J/Psi pi0 decays

Preprint

6 April 2008

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.0804.0896

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}.

Keywords

J/PSI PI0 DECAYS
UNCERTAINTIES
CP VIOLATION
ASYMMETRY

All Related Versions

Version 1, 2008-04-06, ArXiv
Published version: Physical Review Letters, 101 (2), 021801.

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