Computation of the strong coupling in QCD with two dynamical flavors

By M. Morte, R. Frezzotti, J. Heitger, J. Rolf, Rainer Sommer, U. Wolff. 2004

159 citations recorded by the source corpus.

Abstract We present a non-perturbative computation of the running of the coupling α s in QCD with two flavors of dynamical fermions in the Schrodinger functional scheme. We improve our previous results by a reliable continuum extrapolation. The Λ-parameter characterizing the high-energy running is related to the value of the coupling at low energy in the continuum limit. An estimate of Λ r 0 is given using large-volume data with lattice spacings a from 0.07 fm to 0.1 fm . It translates into Λ MS ¯ ( 2 ) = 245 ( 16 ) ( 16 ) MeV [assuming r 0 = 0.5 fm ]. The last step still has to be improved to reduce the uncertainty.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/f1d6a8816bf0f96594b9bb2d238d44eff7f7f586

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In Nuclear and High Energy Physics

1. Guy F. de Téramond
2. A. Deur
3. S. Brodsky
4. Hans Günter Dosch
5. J. Erlich

Citations in the corpus

• FLAG Review 2019 (2019, unknown): “789(52) ALPHA 04 [722] 2 A ⋆ ⋆ r0 = 0.”
• Review of lattice results concerning low-energy particle physics (2016, unknown): “ALPHA 01A, 04, 05, 12, 13A [12, 135, 238, 584, 585] 2 Wilson npSW”
• The QCD running coupling (2016, methodology): “Another approach is to use the Schrödinger functional [123].”