QCD Lambda parameter from Landau-gauge gluon and ghost correlations

Details QCD Lambda parameter from Landau-gauge gluon and ghost correlations QCD Lambda parameter from Landau-gauge gluon and ghost correlations

2010-03-08

arxiv.org/abs/1003.1585v1

PoS LAT2009:210,2009

Physics

High Energy Physics

High Energy Physics - Lattice

8 pages, 4 figures. Contribution to the XXVII International Symposium on Lattice Field Theory, July 26-31, 2009, Peking Univer

Scientific paper

We utilise a recently developed minimal MOM scheme to determine the QCD Lambda parameter from the gluon and ghost propagators in lattice Landau gauge. We discuss uncertainties in the analysis and report our preliminary zero and two flavour results, which are r_0*LambdaMS^{(0)}=0.62(1) and r_0*LambdaMS^{(2)}=0.60(3)(2), with the second error due to an extrapolation uncertainty.

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