Determination of the $Σ$--$Λ$ mixing angle from QCD sum rules

The $Σ$--$Λ$ mixing angle is calculated in framework of the QCD sum rules. We find that our prediction for the mixing angle is $(1.00\pm 0.15)^0$ which is in good agreement with the quark model prediction, and approximately two times larger than the recent lattice QCD calculations.

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