Data di Pubblicazione:
2007
Citazione:
The logarithmic contribution to the QCD static energy at N**4 LO / N.S. Brambilla, X. Garcia i Tormo, Joan Soto, Antonio Vairo. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 647:2-3(2007), pp. 185-193.
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 NNNNLO in alpha_s. At the same order, this provides the logarithmic terms of the singlet static potential in pNRQCD and the log alpha_s terms of the static energy.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
QCD ; high order perturbative calculations ;
effective field theories ; particle physics ;
quarks ; strong interactions
Elenco autori:
N.S. Brambilla, X. Garcia i Tormo, Joan Soto, Antonio Vairo
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