We determine non-perturbatively the normalisation parameter Z(m)Z(P)/Z(A) as well as the Symanzik coefficients bm and b(A)-b(P), required in O(a) improved quark mass renormalisation with Wilson fermions. The strategy underlying their computation involves simulations in N-f = 3 QCD with O(a) improved massless sea and non-degenerate valence quarks in the finite-volume Schrodinger functional scheme. Our results, which cover the typical gauge coupling range of large-volume N-f = 2+ 1QCDsimulations withWilson fermions at lattice spacings below 0.1 fm, are of particular use for the non-perturbative calculation of O(a) improved renormalised quark masses.

de Divitiis, G.m., Fritzsch, P., Heitger, J., Koster, C.c., Kuberski, S., Vladikas, A. (2019). Non-perturbative determination of improvement coefficients bm and bA- bP and normalisation factor ZmZP/ ZA with Nf= 3 Wilson fermions: ALPHA Collaboration. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 79(9) [10.1140/epjc/s10052-019-7287-1].

Non-perturbative determination of improvement coefficients bm and bA- bP and normalisation factor ZmZP/ ZA with Nf= 3 Wilson fermions: ALPHA Collaboration

de Divitiis G. M.;
2019-01-01

Abstract

We determine non-perturbatively the normalisation parameter Z(m)Z(P)/Z(A) as well as the Symanzik coefficients bm and b(A)-b(P), required in O(a) improved quark mass renormalisation with Wilson fermions. The strategy underlying their computation involves simulations in N-f = 3 QCD with O(a) improved massless sea and non-degenerate valence quarks in the finite-volume Schrodinger functional scheme. Our results, which cover the typical gauge coupling range of large-volume N-f = 2+ 1QCDsimulations withWilson fermions at lattice spacings below 0.1 fm, are of particular use for the non-perturbative calculation of O(a) improved renormalised quark masses.
2019
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/02 - FISICA TEORICA, MODELLI E METODI MATEMATICI
English
High Energy Physics - Lattice; High Energy Physics - Lattice
http://arxiv.org/abs/1906.03445v2
de Divitiis, G.m., Fritzsch, P., Heitger, J., Koster, C.c., Kuberski, S., Vladikas, A. (2019). Non-perturbative determination of improvement coefficients bm and bA- bP and normalisation factor ZmZP/ ZA with Nf= 3 Wilson fermions: ALPHA Collaboration. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 79(9) [10.1140/epjc/s10052-019-7287-1].
de Divitiis, Gm; Fritzsch, P; Heitger, J; Koster, Cc; Kuberski, S; Vladikas, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/238345
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