Next-to-leading-order temperature corrections to correlators in QCD
Abstract
Corrections of order T4 to vector and axial current correlators in QCD at a finite temperature T<Tc are obtained using dispersion relations for the amplitudes of deep inelastic scattering on pions. Their relation with the operator product expansion is presented. An interpretation of the results in terms of T-dependent meson masses is given: masses of and a1 start to move with temperature in order T4.
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