2014
DOI: 10.1103/physrevd.89.014507
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High statistics determination of the strong coupling constant in Taylor scheme and its OPE Wilson coefficient from lattice QCD with a dynamical charm

Abstract: This paper reports on the determination of αS from lattice simulations with 2+1+1 twisted-mass dynamical flavours via the computation of the ghost-gluon coupling renormalized in the MOM Taylor scheme. A high-statistics sample of gauge configurations, used to evaluate the coupling from ghost and gluon propagators, allows for the appropriate update of previous results, now performing an improved analysis of data with reduced statistical errors and the systematical uncertainties under a better control.

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Cited by 44 publications
(62 citation statements)
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“…We will take Λ MS = 314 MeV, as an input from ref. [46] 5 where, as above mentioned, the MOM T-scheme coupling is computed from the lattice and confronted with eq. (2.1), properly particularized (ref.…”
Section: Resultsmentioning
confidence: 99%
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“…We will take Λ MS = 314 MeV, as an input from ref. [46] 5 where, as above mentioned, the MOM T-scheme coupling is computed from the lattice and confronted with eq. (2.1), properly particularized (ref.…”
Section: Resultsmentioning
confidence: 99%
“…Thus, the MOM T-scheme coupling can be computed only from ghost and gluon propagators, without involving a three-point function. The latter allows for a very precise determination of α s in a range of momenta which makes possible to get an accurate estimate of Λ QCD that, for realistic unquenched lattice simulations, succesfully compares to its value from experiments [28,29,46].…”
Section: Jhep04(2014)086mentioning
confidence: 99%
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