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.| File | Dimensione | Formato | |
|---|---|---|---|
|
1906.03445.pdf
solo utenti autorizzati
Licenza:
Non specificato
Dimensione
1.09 MB
Formato
Adobe PDF
|
1.09 MB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
