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Titolo:
Three-loop beta function and non-perturbative alpha(s) in asymmetric momentum scheme
Autore:
Boucaud, P; Leroy, JP; Micheli, J; Pene, O; Roiesnel, C;
Indirizzi:
UnivOrsay, 11, Phys Theor & Hautes Energies Lab, CNRS, URA D00063, F-91405Univ Paris 11 Orsay France F-91405 ergies Lab, CNRS, URA D00063, F-91405 Ecoleseau,tech, Ctr Phys Theor, CNRS, Unite Mixte Rech C7644, F-91128 Palai Ecole Polytech Palaiseau France F-91128 Mixte Rech C7644, F-91128 Palai
Titolo Testata:
JOURNAL OF HIGH ENERGY PHYSICS
fascicolo: 12, , anno: 1999,
pagine: NIL_60 - NIL_69
SICI:
1029-8479(19990401):12<NIL_60:TBFANA>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
3-GLUON VERTEX; QCD;
Keywords:
lattice gauge field theories; lattice QC;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Boucaud, P Univ Paris 11, Phys Theor & Hautes Energies Lab, CNRS, URA D00063, Batiment Univ Paris 11 Batiment 211 Orsay France F-91405 0063, Batiment
Citazione:
P. Boucaud et al., "Three-loop beta function and non-perturbative alpha(s) in asymmetric momentum scheme", J HIGH EN P, (12), 1999, pp. NIL_60-NIL_69

Abstract

We determine the three-loop coefficient of the beta function in the asymmetric momentum subtraction scheme in Landau gauge. This scheme is convenientfor lattice studies of alpha(s), the running coupling constant of QCD. We present high statistics lattice results for alpha(s) in the SU(3) Yang-Mills theory without quark, compare with the three-loop running and extract thevalue of the corresponding Lambda(<(MS)over bar>) parameter. We estimate the systematic error coming from four-loop terms. We obtain the result: Lambda(<(MS)over bar>) = 295 (5)(15)a(-1)(beta=6.0)/1.97GeV MeV.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 18:06:05