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@ARTICLE{DallaBrida:599764,
author = {Dalla Brida, Mattia and Höllwieser, Roman and Knechtli,
Francesco and Korzec, Tomasz and Sint, Stefan and Sommer,
Rainer},
collaboration = {{ALPHA Collaboration}},
title = {{H}eavy {W}ilson quarks and {O}(a) improvement:
nonperturbative results for b$_{g}$},
reportid = {PUBDB-2023-07490, DESY-24-001. arXiv:2401.00216},
year = {2024},
note = {J. High Energ. Phys. 2024, 188 (2024). 26 pages, 5 figures.
Included additional references and fixed some typos. Matches
published version The work is supported by the German
Research Foundation (DFG) research unit FOR5269
“Futuremethods for studying confined gluons in QCD”.},
abstract = {With Wilson quarks, on-shell O(a) improvement of the
lattice QCD action is achieved by including the
Sheikholeslami-Wohlert term and two further operators of
mass dimension 5, which amount to a mass-dependent rescaling
of the bare parameters. We here focus on the rescaled bare
coupling, $
{\tilde{g}}_0^2={g}_0^2\left(1+{b}_{\textrm{g}}a{m}_{\textrm{q}}\right)
$, and the determination of $
{b}_{\textrm{g}}\left({g}_0^2\right) $ which is currently
only known to 1-loop order of perturbation theory. We derive
suitable improvement conditions in the chiral limit and in a
finite space-time volume and evaluate these for different
gluonic observables, both with and without the gradient
flow. The choice of β-values and the line of constant
physics are motivated by the ALPHA collaboration’s
decoupling strategy to determine α$_{s}$(m$_{Z}$) [1].
However, the improvement conditions and some insight into
systematic effects may prove useful in other contexts, too.},
keywords = {quark: Wilson (INSPIRE) / dimension: 5 (INSPIRE) / flow:
gradient (INSPIRE) / mass: operator (INSPIRE) / quantum
chromodynamics (INSPIRE) / lattice field theory: action
(INSPIRE) / space-time (INSPIRE) / symmetry: chiral
(INSPIRE) / decoupling (INSPIRE) / nonperturbative (INSPIRE)
/ mass dependence (INSPIRE) / rescaling (INSPIRE) /
perturbation theory (INSPIRE) / beta function (INSPIRE) /
coupling constant (INSPIRE) / Algorithms and Theoretical
Developments (autogen) / Lattice QCD (autogen) /
Non-Perturbative Renormalization (autogen) / Standard Model
Parameters (autogen)},
cin = {$Z_ZPPT$},
ddc = {530},
cid = {$I:(DE-H253)Z_ZPPT-20210408$},
pnm = {611 - Fundamental Particles and Forces (POF4-611) /
EuroPLEx - European network for Particle physics, Lattice
field theory and Extreme computing (813942)},
pid = {G:(DE-HGF)POF4-611 / G:(EU-Grant)813942},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)25},
eprint = {2401.00216},
howpublished = {arXiv:2401.00216},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2401.00216;\%\%$},
doi = {10.3204/PUBDB-2023-07490},
url = {https://bib-pubdb1.desy.de/record/599764},
}