@article{bf90ab3ddcdc41d2a4bc27459c44da16,
title = "The logarithmic contribution to the QCD static energy at N4LO",
abstract = "Using pNRQCD and known results for the field strength correlator, we calculate the ultrasoft contribution to the QCD static energy of a quark-antiquark pair at short distances at N4LO in αs. At the same order, this provides the logarithmic terms of the singlet static potential in pNRQCD and the log αs terms of the static energy.",
author = "Nora Brambilla and {Garcia i Tormo}, Xavier and Joan Soto and Antonio Vairo",
note = "Funding Information: We are grateful to Matthias Jamin for making us available the details of the calculations reported in Ref. [23] . N.B. and A.V. thank Yu-Qi Chen, Carlo Ewerz and Yu Jia for discussions. Part of this work has been carried out at ECT*, Trento, in August 2006, during the program “Heavy quarkonium and related heavy quark systems”. We acknowledge financial support from “Azioni Integrate Italia–Spagna 2004 (IT1824)/Acciones Integradas Espa{\~n}a–Italia (HI2003-0362)”, and from the cooperation agreement INFN05-04 (MEC-INFN). X.G.T. and J.S. are also supported by MEC (Spain) grant CYT FPA 2004-04582-C02-01, the CIRIT (Catalonia) grant 2005SGR00564 and the network Euridice (EU) HPRN-CT2002-00311. X.G.T. acknowledges financial support from the DURSI of the Generalitat de Catalunya and the Fons Social Europeu. The work of X.G.T. was also supported in part by the US Department of Energy, Division of High Energy Physics, under contract W-31-109-ENG-38. A.V. acknowledges the financial support obtained inside the Italian MIUR program “incentivazione alla mobilit{\`a} di studiosi stranieri e italiani residenti all'estero”.",
year = "2007",
month = apr,
day = "5",
doi = "10.1016/j.physletb.2007.02.015",
language = "English",
volume = "647",
pages = "185--193",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "Elsevier",
number = "2-3",
}