Measurements of the Branching Fraction and Time-Dependent CP Asymmetries of B0 to J/Psi Pi0 decays

TL;DR

This paper reports precise measurements of the branching fraction and CP asymmetries in B0 -> J/Psi pi0 decays, providing insights into CP violation in the B meson system.

Contribution

First measurement of the branching fraction and CP asymmetries in B0 -> J/Psi pi0 decays using BaBar data.

Findings

Branching fraction B(B0 -> J/Psi pi0) = (1.94 +/- 0.22 +/- 0.17) x 10^-5

CP asymmetry parameters C = -0.21 +/- 0.26 +/- 0.06, S = -0.68 +/- 0.30 +/- 0.04

Abstract

We present measurements of the branching fraction and time-dependent CP asymmetries in B0 -> JPsi pi0 decays based on (231.8 +/- 2.6) x 10**6 asymmetries Y(4S) -> BBbar decays collected with the BaBar detector at the SLAC PEP-II asymmetric-energy B factory. We obtain a branching fraction B(B0 -> JPsi pi0) = (1.94 +/- 0.22 (stat.) +/- 0.17 (syst.)) x 10**-5. We also measure the CP asymmetry parameters C = -0.21 +/- 0.26 (stat.) +/- 0.06 (syst.) and S = -0.68 +/- 0.30 (stat.) +/- 0.04 (syst.).