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arXiv · hep-ph/9210220

The Cheshire Cat Bag Model: Color Anomaly and $η'$ Properties

A. Wirzba
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Abstract

We show that color can leak from a QCD bag if we allow for pseudoscalar isoscalar singlet ($η'$) coupling at the surface. To enforce total confinement of color an additional boundary term is suggested. New relations between the $η'$ mass and decay constant and the QCD gluon condensates are derived and compared with the empirical parameters.

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A. Wirzba. 1992-10-08. The Cheshire Cat Bag Model: Color Anomaly and $η'$ Properties. https://doi.org/10.1016/0375-9474(93)90677-p

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