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The possible $\Sigma^0$-$\Lambda$ mixing in QCD sum rules

High Energy Physics - Phenomenology 2009-10-31 v1

Abstract

We calculate the on-shell Σ0\Sigma^0-Λ\Lambda mixing parameter θ\theta with the method of QCD sum rule. Our result is θ(mΣ02)=()(0.5±0.1)\theta (m^2_{\Sigma^0}) =(-)(0.5\pm 0.1)MeV. The electromagnetic interaction is not included.

Keywords

Cite

@article{arxiv.hep-ph/9802321,
  title  = {The possible $\Sigma^0$-$\Lambda$ mixing in QCD sum rules},
  author = {Shi-Lin Zhu and W. -Y. P. Hwang and Ze-sen Yang},
  journal= {arXiv preprint arXiv:hep-ph/9802321},
  year   = {2009}
}