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.
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.
The logarithmic contribution to the QCD static energy at N**4 LO
N.S. BrambillaPrimo
;Antonio Vairo
2007
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.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
