Göckeler, M, Horsley, R, Irving, AC, Pleiter, D, Rakow, PEL 
ORCID: 0000-0003-4486-2158, Schierholz, G and Stüben, H
(2005)
A Determination of the Lambda Parameter from Full Lattice QCD.
Phys.Rev.D, 73 (1).
014513-.
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Abstract
We present a determination of the QCD parameter Lambda in the quenched approximation (n_f=0) and for two flavours (n_f=2) of light dynamical quarks. The calculations are performed on the lattice using O(a) improved Wilson fermions and include taking the continuum limit. We find Lambda_{n_f=0} = 259(1)(20) MeV and Lambda_{n_f=2} = 261(17)(26) MeV}, using r_0 = 0.467 fm to set the scale. Extrapolating our results to five flavours, we obtain for the running coupling constant at the mass of the Z boson alpha_s(m_Z) = 0.112(1)(2). All numbers refer to the MSbar scheme.
| Item Type: | Article |
|---|---|
| Additional Information: | 25 pages, 9 figures |
| Uncontrolled Keywords: | hep-ph, hep-ph, hep-lat |
| Subjects: | ?? QC ?? |
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences > Mathematical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 31 Oct 2008 09:57 |
| Last Modified: | 17 Dec 2022 01:14 |
| DOI: | 10.1103/physrevd.73.014513 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/423 |
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