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We use the operator-product expansion to find the coefficient of 〈G²〉 in Cornwall's minimally gauge-dependent effective gluon propagator to lowest order in αₛ. This contribution to the propagator is explicitly shown to be gauge invariant. The running mass generated by this condensate is obtained to be mgluon²≈(640 MeV)⁴Q². Quark condensate effects are insignificant.
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Martin Lavelle (1991) studied this question.
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