Lattice calculation of 1/p2 corrections to αs and of ΛQCD in the (MOM)over-tilde scheme.


Boucaud, P, Burgio, G, Di Renzo, F, Leroy, JP, Micheli, J, Parrinello, C, Pène, O, Pittori, C, Rodríguez-Quintero, J, Roiesnel, C et al (show 1 more authors) (2000) Lattice calculation of 1/p2 corrections to αs and of ΛQCD in the (MOM)over-tilde scheme. JOURNAL OF HIGH ENERGY PHYSICS, 2000 (4). 006-. ISSN 1126-6708, 1029-8479

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Abstract

We report on very strong evidence of the occurrence of power terms in αs(p), the QCD running coupling constant in the MÕM scheme, by analyzing non-perturbative measurements from the lattice three-gluon vertex between 2.0 and 10.0 GeV at zero flavor. While putting forward the caveat that this definition of the coupling is a gauge dependent one, the general relevance of such an occurrence is discussed. We fit ΛMSbar(nf = 0) = 237±3 + 0−10 MeV in perfect agreement with the result obtained by the ALPHA group with a totally different method. The power correction to αs(p) is fitted to (0.63±0.03 + 0.0− 0.13) GeV2/p2.

Item Type: Article
Additional Information: ## TULIP Type: Articles/Papers (Journal) ##
Uncontrolled Keywords: renormalization regularization and renormalons, nonperturbative effects, QCD, lattice QCD
Subjects: ?? QC ??
Divisions: Faculty of Science & Engineering > School of Physical Sciences > Mathematical Sciences
Depositing User: Symplectic Admin
Date Deposited: 17 Apr 2009 08:46
Last Modified: 16 Jun 2026 07:23
DOI: 10.1088/1126-6708/2000/04/006
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/600
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