Kostrzewa, Bartosz; Alexandrou, Constantia; Bacchio, Simone; Bergner, Georg; Dimopoulos, Petros; Finkenrath, Jacob; Frezzotti, Roberto; Garofalo, Marco; Koutsou, Giannis; Labus, Peter; Sanfilippo, Francesco; Simula, Silvano; Ueding, Martin; Urbach, Carsten; Wenger, Urs (2022). Gradient-flow scale setting with $N_f=2+1+1$ Wilson-clover twisted-mass fermions. In: The 38th International Symposium on Lattice Field Theory. Trieste, Italy: Sissa Medialab 10.22323/1.396.0131
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We present a determination of the gradient flow scales w0 , t0‾‾√
and t0/w0 in isosymmetric QCD, making use of the gauge ensembles produced by the Extended Twisted Mass Collaboration (ETMC) with Nf=2+1+1
flavours of Wilson-clover twisted-mass quarks including configurations close to the physical point for all dynamical flavours. The simulations are carried out at three values of the lattice spacing and the scale is set through the PDG value of the pion decay constant, yielding w0=0.17383(63) fm, t0‾‾√=0.14436(61) fm and t0/w0=0.11969(62)
fm. Finally, fixing the kaon mass to its isosymmetric value, we determine the ratio of the kaon and pion leptonic decay constants to be fK/fπ=1.1995(44).
Item Type: |
Conference or Workshop Item (Paper) |
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Division/Institute: |
08 Faculty of Science > Institute of Theoretical Physics 10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) |
UniBE Contributor: |
Wenger, Urs |
Subjects: |
500 Science > 530 Physics |
Publisher: |
Sissa Medialab |
Language: |
English |
Submitter: |
Binia Marti |
Date Deposited: |
21 Mar 2023 11:23 |
Last Modified: |
21 Mar 2023 23:27 |
Publisher DOI: |
10.22323/1.396.0131 |
BORIS DOI: |
10.48350/179888 |
URI: |
https://boris.unibe.ch/id/eprint/179888 |
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