Two-Loop Ultrasoft Running of the O(v^2) QCD Quark Potentials
High Energy Physics - Phenomenology
2008-11-26 v3
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.
Cite
@article{arxiv.hep-ph/0611292,
title = {Two-Loop Ultrasoft Running of the O(v^2) QCD Quark Potentials},
author = {Andre H. Hoang and Maximilian Stahlhofen},
journal= {arXiv preprint arXiv:hep-ph/0611292},
year = {2008}
}
Comments
13 pages, 3 figures; typos corrected, reference added, information on cross checks added on page 7; acknowledgments added