A Determination of the Lambda Parameter from Full Lattice QCD

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dc.creatorGöckeler, M.
dc.creatorHorsley, R.
dc.creatorIrving, A. C.
dc.creatorPleiter, D.
dc.creatorRakow, P. E. L.
dc.creatorSchierholz, G.
dc.creatorStüben, H.
dc.date2005-02-22
dc.date2005-02-22
dc.date.accessioned2026-07-07T11:43:33Z
dc.date.available2026-07-07T11:43:33Z
dc.descriptionWe 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.
dc.description25 pages, 9 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0502212
dc.identifierhttp://arxiv.org/abs/hep-ph/0502212
dc.identifierPhys.Rev.D73:014513,2006
dc.identifierdoi:10.1103/PhysRevD.73.014513
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201276
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Lattice
dc.titleA Determination of the Lambda Parameter from Full Lattice QCD
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