We compute the mass spectrum for strange and charmed baryons in the partially quenched approach using Nf=2 twisted mass QCD configurations. We investigate two main issues: the size of lattice artefacts using three values of the lattice spacing (the smallest of which is approximately 0.05 fm) and the dependence of baryon masses on meson masses. We thus perform a global fit in order to extrapolate simultaneously to the continuum limit and to the physical point. We obtain predictions for the Ωsss, Ξdss, Λuds, Ωccc, Ξdcc, Λudc masses. © 2010 Elsevier B.V.
From strange to charmed baryons using two-flavour QCD / Jaume, Carbonell; Drach, Vincent; Papinutto, MAURO LUCIO. - In: NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS. - ISSN 0920-5632. - 207-208:(2010), pp. 367-370. (Intervento presentato al convegno 15th High-Energy Physics International Conference on Quantum Chromodynamics (QCD10) tenutosi a Montpellier; France) [10.1016/j.nuclphysbps.2010.10.095].
From strange to charmed baryons using two-flavour QCD
PAPINUTTO, MAURO LUCIO
2010
Abstract
We compute the mass spectrum for strange and charmed baryons in the partially quenched approach using Nf=2 twisted mass QCD configurations. We investigate two main issues: the size of lattice artefacts using three values of the lattice spacing (the smallest of which is approximately 0.05 fm) and the dependence of baryon masses on meson masses. We thus perform a global fit in order to extrapolate simultaneously to the continuum limit and to the physical point. We obtain predictions for the Ωsss, Ξdss, Λuds, Ωccc, Ξdcc, Λudc masses. © 2010 Elsevier B.V.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
