Results 101 to 110 of about 99,030 (177)
Non Perturbative Effects in QCD
8 pages, 5 figures. Talk at the International Workshop on QCD: QCD@Work 2003 - Conversano (Italy) 14-18 June 2003 (eConf C030614)
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QCD perturbation theory at low energies
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.
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Nucleus-nucleus interaction in the perturbative QCD [PDF]
M.A. Braun, M.A. Braun
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On the relation between pole and running heavy quark masses beyond the four-loop approximation
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.
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Nearly perturbative QCD coupling with lattice-motivated zero IR limit [PDF]
Gorazd Cvetič
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Perturbation theory of non-perturbative QCD
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.
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Perturbative QCD fragmentation functions for production ofP-wave charm and bottom mesons [PDF]
Tzu-Chiang Yuan
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Dimensional Reduction and Hot QCD: Calculating the Debye Mass Non-Perturbatively [PDF]
Kari Rummukainen
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Eric Braaten, Yu Jia, Thomas Mehen
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