Determination of Lambda((MS)over-bar) from quenched and N-f=2 dynamical QCD

Authors
Booth, S Gockeler, M Horsley, R Irving, AC Joo, B Pickles, S Pleiter, D Rakow, PEL Schierholz, G Sroczynski, Z Stuben, H
Citation
S. Booth et al., Determination of Lambda((MS)over-bar) from quenched and N-f=2 dynamical QCD, PHYS LETT B, 519(3-4), 2001, pp. 229-237
Citations number
41
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
519
Issue
3-4
Year of publication
2001
Pages
229 - 237
Database
ISI
SICI code
0370-2693(20011101)519:3-4<229:DOLFQA>2.0.ZU;2-7
Abstract
The scale parameter Lambda ((MS) over bar) is computed on the lattice in th e quenched approximation and for N-f = 2 flavors of light dynamical quarks. The dynamical calculation is done with non-perturbatively O(a) improved Wi lson-fern-dons. In the continuum limit we obtain Lambda (Nf=0)((MS) over ba r) = 243(1)(10) MeV and Lambda (Nf =2)((MS) over bar) = 217(16)(11) MeV, re spectively. (C) 2001 Published by Elsevier Science B.V.