====== TTP98-39 Short-distance tachyonic gluon mass and 1/Q^2 corrections ======
 
 
   <hidden TTP98-39  Short-distance tachyonic gluon mass and 1/Q^2 corrections > 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_\tau) 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.
 </hidden>
|**K.G. Chetyrkin (U. of Karlsruhe), Stephan Narison (U. of Montpellier),   V.I. Zakharov (MPI, Munchen) **  | 
|** Nucl. Phys. B550 353-374 1999  **  |
| {{preprints:1998:ttp98-39.pdf|PDF}} {{preprints:1998:ttp98-39.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9811275|arXiv]]   |
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