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Two-Loop Ultrasoft Running of the O(v^2) QCD Quark Potentials

Andre H. Hoang·Maximilian Stahlhofen
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Abstract

The two-loop ultrasoft contributions to the next-to-leading logarithmic (NLL) running of the QCD potentials at order v^2 are determined. The results represent an important step towards the next-to-next-to-leading logarithmic (NNLL) description of heavy quark pair production and annihilation close to threshold.

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Andre H. Hoang, Maximilian Stahlhofen. 2007-09-27. Two-Loop Ultrasoft Running of the O(v^2) QCD Quark Potentials. https://doi.org/10.1103/physrevd.75.054025

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