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arXiv · hep-ph/0110056

Vanishing dynamical quark mass at zero virtuality?

A. E. Dorokhov·W. Broniowski
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Abstract

We show that the dynamical quark mass in effective nonlocal models can vanish at zero virtuality of the quark as $M(p^2)\propto p^2$. Our arguments follow from the constrained-instanton model of the QCD vacuum and from QCD sum rules calculations with nonlocal condensates. The discussed models also lead to analyticity of $M(p^2)$ in the vicinity of zero.

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A. E. Dorokhov, W. Broniowski. 2001-10-04. Vanishing dynamical quark mass at zero virtuality?. https://doi.org/10.1103/physrevd.65.094007

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