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arXiv · hep-ph/9811275

Short-distance tachyonic gluon mass and 1/Q^2 corrections

K. G. Chetyrkin·Stephan Narison·V. I. Zakharov
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Abstract

We consider the assumption that a tachyonic gluon mass imitates short-distance nonperturbative physics of QCD. The phenomenological implications include modifications of the QCD sum rules for correlators of currents with various quantum numbers. The new 1/Q^2 terms allow to resolve in a natural way old puzzles in the pion and scalar-gluonium channels. They lead to a slight reduction of the values of the running light quark masses from the (pseudo)scalar sum rules and of alpha_s(M_τ) from tau decay data. Further tests can be provided by precision measurements of the correlators on the lattice and by the e^+e^- --> hadrons data.

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K. G. Chetyrkin, Stephan Narison, V. I. Zakharov. 1999-04-13. Short-distance tachyonic gluon mass and 1/Q^2 corrections. https://doi.org/10.1016/s0550-3213(99)00167-4

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