Compatibility between $e^+e^-$ and $\tau$ decay data in the di-pion channel and implications for $a_\mu^\mathrm{SM}$ and CVC tests

Alejandro Miranda

Compatibility between $e^+e^-$ and $\tau$ decay data in the di-pion channel and implications for $a_\mu^\mathrm{SM}$ and CVC tests

High Energy Physics - Phenomenology 2024-11-18 v1 High Energy Physics - Experiment High Energy Physics - Lattice

Authors: Alejandro Miranda

Abstract

We have revisited the isospin-breaking corrections relating $\sigma(e^+e^-\to\pi^+\pi^-)$ and $\Gamma(\tau^-\to\pi^-\pi^0\nu_\tau)$ . We confirm that the associated uncertainty is under control, so that tau data can also be used to predict accurately the leading hadronic contribution to the muon anomalous magnetic moment and precision conserved vector current tests can be carried out.

Keywords

isospin-breaking corrections hadronic contribution muon anomalous magnetic moment conserved vector current tau decay

Cite

@article{arxiv.2411.10226,
  title  = {Compatibility between $e^+e^-$ and $\tau$ decay data in the di-pion channel and implications for $a_\mu^\mathrm{SM}$ and CVC tests},
  author = {Alejandro Miranda},
  journal= {arXiv preprint arXiv:2411.10226},
  year   = {2024}
}

Comments

Comments: 6 pages, 2 figures, 2 tables. Contribution to the proceedings of the 10th International Conference on Quarks and Nuclear Physics (QNP2024), 8-12 July, 2024. Barcelona, Spain

Compatibility between $e^+e^-$ and $\tau$ decay data in the di-pion channel and implications for $a_\mu^\mathrm{SM}$ and CVC tests

Abstract

Keywords

Cite

Comments

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