Determination of the $\Sigma$--$\Lambda$ mixing angle from QCD sum rules

Abstract

The $\Sigma$--$\Lambda$ 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.

Comments: 5 pages, no figures, LaTeX formatted