The chromo-polarizabilities of a heavy quark at weak coupling
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hep-ph
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heavyincludesquarkanalysisapproximationcaseschromo-polarizabiliteschromo-polarizabilities
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We obtain the renormalization group improved expressions of the Wilson coefficients of the HQET Lagrangian with leading logarithmic approximation to ${\cal O}(1/m^3)$ for the spin-independent sector, which includes the heavy quark chromo-polarizabilites. Our analysis includes the effects induced by spectator quarks. We observe that the numerical impact of these logarithms is very large in most cases.
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