Results 101 to 110 of about 99,030 (177)

Non Perturbative Effects in QCD

open access: yes, 2003
8 pages, 5 figures. Talk at the International Workshop on QCD: QCD@Work 2003 - Conversano (Italy) 14-18 June 2003 (eConf C030614)
openaire   +3 more sources

QCD perturbation theory at low energies

open access: yesPhysical Review Letters, 1992
We apply the optimization procedure based on the Principle of Minimal Sensitivity to the third-order calculation of $\R$. The effective couplant remains finite, freezing to a value $ _s/ = 0.26$ at low energies. Using Poggio-Quinn-Weinberg smearing we find good agreement between theory and experiment right down to zero energy.
Mattingly, A. C., Stevenson, P. M.
openaire   +3 more sources

On the relation between pole and running heavy quark masses beyond the four-loop approximation

open access: yesEPJ Web of Conferences, 2018
The effective charges motivated method is applied to the relation between pole and M̅S̅-scheme heavy quark masses to study high order perturbative QCD corrections in the observable quantities proportional to the running quark masses.
Kataev A. L., Molokoedov V. S.
doaj   +1 more source

Perturbation theory of non-perturbative QCD

open access: yes, 2015
Perturbation theory is shown to be working in the IR limit of pure SU(3) Yang-Mills theory in Landau gauge by an unconventional setting of the perturbative expansion. A dynamical mass is predicted for the gluon and the lattice data are reproduced fairly well by a second-order expansion, without any free parameter.
openaire   +2 more sources

Bproduction asymmetries in perturbativeQCD [PDF]

open access: green, 2002
Eric Braaten, Yu Jia, Thomas Mehen
openalex   +1 more source

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