We present a study of the isospin-breaking (IB) corrections to pseudoscalar (PS) meson masses using the gauge configurations produced by the ETM Collaboration with Nf = 2+1+1 dynamical quarks at three lattice spacings varying from 0.089 to 0.062 fm. Our method is based on a combined expansion of the path integral in powers of the small parameters m d-m u/ΛQCD and αem, where m f is the renormalized quark mass and αem the renormalized fine structure constant. We obtain results for the pion, kaon and Dmeson mass splitting; for the Dashen's theorem violation parameters ∈ γ(MM, 2 GeV), ∈ π 0 ∈ K 0(MS, 2 GeV) for the light quark masses m d-m uMS̄,2GeV,m u/m dMS̄,2GeV; for the flavour symmetry breaking parameters R(MS, 2 GeV) and Q(MS, 2 GeV) and for the strong IB effects on the kaon decay constants. © The Authors, published by EDP Sciences, 2018.

Giusti, D., Lubicz, V., Martinelli, G., Sanfilippo, F., Simula, S., Tantalo, N., et al. (2018). Leading isospin-breaking corrections to meson masses on the lattice. ??????? it.cilea.surplus.oa.citation.tipologie.CitationProceedings.prensentedAt ??????? Lattice 2017 [10.1051/epjconf/201817506002].

Leading isospin-breaking corrections to meson masses on the lattice

Tantalo, N.;
2018

Abstract

We present a study of the isospin-breaking (IB) corrections to pseudoscalar (PS) meson masses using the gauge configurations produced by the ETM Collaboration with Nf = 2+1+1 dynamical quarks at three lattice spacings varying from 0.089 to 0.062 fm. Our method is based on a combined expansion of the path integral in powers of the small parameters m d-m u/ΛQCD and αem, where m f is the renormalized quark mass and αem the renormalized fine structure constant. We obtain results for the pion, kaon and Dmeson mass splitting; for the Dashen's theorem violation parameters ∈ γ(MM, 2 GeV), ∈ π 0 ∈ K 0(MS, 2 GeV) for the light quark masses m d-m uMS̄,2GeV,m u/m dMS̄,2GeV; for the flavour symmetry breaking parameters R(MS, 2 GeV) and Q(MS, 2 GeV) and for the strong IB effects on the kaon decay constants. © The Authors, published by EDP Sciences, 2018.
Lattice 2017
Rilevanza internazionale
Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici
eng
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85045146927&doi=10.1051%2fepjconf%2f201817506002&partnerID=40&md5=f132591b00c536ef279f1d4e697428cf
Intervento a convegno
Giusti, D., Lubicz, V., Martinelli, G., Sanfilippo, F., Simula, S., Tantalo, N., et al. (2018). Leading isospin-breaking corrections to meson masses on the lattice. ??????? it.cilea.surplus.oa.citation.tipologie.CitationProceedings.prensentedAt ??????? Lattice 2017 [10.1051/epjconf/201817506002].
Giusti, D; Lubicz, V; Martinelli, G; Sanfilippo, F; Simula, S; Tantalo, N; Tarantino, C
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/199320
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