Abstract
An example of the Khuri conjecture is provided by considering a special case of the Dashen-Frishman model in which the anomalous dimension of the spinor field vanishes. This leads to a free-field-like theory for nonvanishing couplings. It is concluded that the Callan-Symanzik function $\ensuremath{\beta}(g)$ should be singular at these coupling constants in order to avoid the consequences of the Parisi-Callan-Gross theorem which would require vanishing coupling constant.
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