Improved measurement of time-dependent CP violation in B0 -> J/Psi pi0 decays

S. E. Lee; K. Miyabayashi

doi:10.1103/PhysRevD.77.071101

Improved measurement of time-dependent CP violation in B0 -> J/Psi pi0 decays

High Energy Physics - Experiment 2019-08-13 v3

Authors: S. E. Lee , K. Miyabayashi

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Abstract

We report improved measurements of time-dependent CP violation parameters for $B^0(\bar{B}^0) \to J/\psi \pi^0$ decay. This analysis is based on 535 million $B\bar{B}$ pairs accumulated at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy e^+e^- collider. From the distribution of proper time intervals between the two B decays, we obtain the following CP violation parameters $\mathcal{S}_{J/\psi \pi^0} = -0.65\pm0.21 (\rm{stat})\pm0.05 (\rm{syst})$ and $\mathcal{A}_{J/\psi \pi^0} = +0.08\pm0.16 (\rm{stat})\pm0.05 (\rm{syst})$ , which are consistent with Standard Model expectations.

Keywords

time-dependent cp violation b0 decay j/psi pi0 belle detector kekb collider standard model

Cite

@article{arxiv.0708.0304,
  title  = {Improved measurement of time-dependent CP violation in B0 -> J/Psi pi0 decays},
  author = {S. E. Lee and K. Miyabayashi},
  journal= {arXiv preprint arXiv:0708.0304},
  year   = {2019}
}

Comments

Resubmitted to PRD(RC), including 4 figures, 6pages Revision has been made according to communication with PRD referees

Improved measurement of time-dependent CP violation in B0 -> J/Psi pi0 decays

Abstract

Keywords

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