Heavy-quark physics with a tmQCD valence action

Autor:	Gregorio Herdoiza, David Preti, Sergio Chaves, José Romero, Javier Ugarrio, Andrea Bussone, Carlos Pena
Rok vydání:	2018
Předmět:	Physics Quantum chromodynamics Quark Particle physics Valence (chemistry) CLs upper limits High Energy Physics - Lattice Lattice (order) High Energy Physics::Lattice High Energy Physics::Phenomenology High Energy Physics - Lattice (hep-lat) FOS: Physical sciences Balanced flow
Zdroj:	Scopus-Elsevier
DOI:	10.48550/arxiv.1812.01474
Popis:	We introduce a mixed-action approach based on CLS ensembles, where a valence $N_f$=2+1+1 Twisted Mass QCD action is combined with the $N_f$=2+1 non-perturbatively O$(a)$-improved Wilson sea sector. We show that for maximally twisted valence quarks, the automatic O$(a)$-improvement of this set-up holds up to lattice artifacts coming from sea quark mass effects. Furthermore, we introduce a three-dimensional Gradient Flow smearing in order to tame the signal to noise ratio problem. Comment: 6 pages, 3 figures, talk presented at the 36th Annual International Symposium on Lattice Field Theory, 22-28 July 2018, East Lansing, Michigan, USA
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e7283080a504d4e738805d03f287f07 Zobrazit plný text záznamu