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

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

2006-11-22

arxiv.org/abs/hep-ph/0611292v3

Phys.Rev.D75:054025,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 3 figures; typos corrected, reference added, information on cross checks added on page 7; acknowledgments added

Scientific paper

10.1103/PhysRevD.75.054025

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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