Measurements of the branching fraction and time-dependentCPasymmetries ofB0→J/ψπ0decays

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10 July 2006

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 74 (1) , 011101
https://doi.org/10.1103/physrevd.74.011101

Abstract

We present measurements of the branching fraction and time-dependent

C P

asymmetries in

B^{0} \to J / ψ π^{0}

decays based on

(231.8 \pm 2.6) \times 10^{6} Υ (4 S) \to B \bar{B}

decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy

B

factory. We obtain a branching fraction

B (B^{0} \to J / ψ π^{0}) = (1.94 \pm 0.22 (stat) \pm 0.17 (syst)) \times 10^{- 5}

. We also measure the

C P

asymmetry parameters

C = - 0.21 \pm 0.26 (stat) \pm 0.06 (syst)

and

S = - 0.68 \pm 0.30 (stat) \pm 0.04 (syst)

.

Keywords

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