Hadronic physics from a Wilson fermion mixed-action approach: charm quark mass and $$D_{(s)}$$ D ( s ) meson decay constants

Autor: Alpha Collaboration, Andrea Bussone, Alessandro Conigli, Julien Frison, Gregorio Herdoíza, Carlos Pena, David Preti, Alejandro Sáez, Javier Ugarrio

Publikováno v: European Physical Journal C: Particles and Fields, Vol 84, Iss 5, Pp 1-27 (2024)

Abstract We present our first set of results for charm physics, using the mixed-action setup introduced in a companion paper [1]. Maximally twisted Wilson valence fermions are used on a sea of non-perturbatively O(a)-improved Wilson fermions, made up

Externí odkaz: https://doaj.org/article/9e1dce2fea1c42c99552edfd82b4e5a2

Matching of $N_f=2+1$ CLS ensembles to a tmQCD valence sector

Autor: Javier Ugarrio, David Preti, José Romero, Carlos Pena, Gregorio Herdoiza, Andrea Bussone

A mixed action composed of valence quark flavours regularized with a fully-twisted tmQCD action and of $N_f=2+1$ flavours of non-perturbatively ${\rm O}(a)$-improved Wilson sea quarks is described. Two procedures for the matching of sea and valence q

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3beb3af3ee59abf512bc47f42181d960
http://arxiv.org/abs/1903.00286

First results for charm physics with a tmQCD valence action

Autor: Javier Ugarrio, Gregorio Herdoiza, David Preti, Carlos Pena, José Romero, Andrea Bussone

Publikováno v: INSPIRE-HEP
Scopus-Elsevier

We present preliminary results in the charm sector from a mixed-action setup, in which CLS $N_f=2+1$ ensembles are combined with a Wilson twisted mass valence action. We study the continuum and chiral limits of charm quark observables such as the dec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e79e00b3d512399b01d23aad8e8f5dc
http://arxiv.org/abs/1812.05458

On the definition of schemes for computing leading order isospin breaking corrections

Autor: Andre Walker-Loud, Tadeusz Janowski, Michele Della Morte, Andrea Bussone

Publikováno v: Scopus-Elsevier
Bussone, A, Della Morte, M, Janowski, T & Walker-Loud, A 2018, ' On the definition of schemes for computing leading order isospin breaking corrections ', P o S-Proceedings of Science, vol. 334, 293 . < https://arxiv.org/pdf/1810.11647.pdf >
University of Southern Denmark

We discuss an alternate scheme, or a 'line of constant physics', which can be used when computing isospin breaking corrections to hadronic quantities. We show that within a certain class of schemes one can separate the electromagnetic corrections fro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11050fa8264fd43be33fd04e633537eb
http://arxiv.org/abs/1810.11647

Tuning the Hybrid Monte Carlo algorithm using molecular dynamics forces' variances

Autor: Michele Della Morte, Andrea Bussone, Vincent Drach, Claudio Pica

Publikováno v: Bussone, A, Della Morte, M, Drach, V & Pica, C 2018, ' Tuning the hybrid Monte Carlo algorithm using molecular dynamics forces' variances ', Computer Physics Communications, vol. 234, no. januar, pp. 179-187 . https://doi.org/10.1016/j.cpc.2018.07.012

Within the HMC algorithm, we discuss how, by using the shadow Hamiltonian and the Poisson brackets, one can achieve a simple factorization in the dependence of the Hamiltonian violations upon either the algorithmic parameters or the parameters specif

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aada808394b27b2f8df47dbfb69abe63