$η-η^{\prime}$ Mixture in Chiral Bag

Details $η-η^{\prime}$ Mixture in Chiral Bag $η-η^{\prime}$ Mixture in Chiral Bag

1997-01-27

arxiv.org/abs/nucl-th/9701052v1

J.KoreanPhys.Soc.30:516-520,1997

Physics

Nuclear Physics

Nuclear Theory

11 pages, Latex

Scientific paper

The $\eta-\eta^{\prime}$ mixture is discussed in the chiral bag model to calculate the pseudoscalar octet-singlet mixing angle consistent with the experimental data. The color anomaly is taken into account with the modified boundary conditions, which shows the relation between the $\eta^{\prime}$ mass and the gluon condensate inside the chiral bag. We show, however, that $\eta-\eta^{\prime}$ mixing angle can follow the Cheshire Cat Principle, i.e., insensitivity to the bag radius.

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