Coulomb gluons and the ordering variable
classification
✦ hep-ph
keywords
coulombgluonorderingordersaccountingcancellationdetailelegant
read the original abstract
We study in detail the exchange of a Coulomb (Glauber) gluon in the first few orders of QCD perturbation theory in order to shed light on their accounting to all orders. We find an elegant cancellation of graphs that imposes a precise ordering on the transverse momentum of the exchanged Coulomb gluon.
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