Light hadrons from lattice QCD with light (u, d), strange and charm dynamical quarks

By R. Baron, Philippe Boucaud, J. Carbonell, A. Deuzeman, V. Drach, F. Farchioni, V. Giménez, G. Herdoiza, K. Jansen, Craig McNeile and 10 more. 2010

254 citations recorded by the source corpus.

We present results of lattice QCD simulations with mass-degenerate up and down and mass-split strange and charm (Nf = 2 + 1 + 1) dynamical quarks using Wilson twisted mass fermions at maximal twist. The tuning of the strange and charm quark masses is performed at two values of the lattice spacing a ≈ 0:078 fm and a ≈ 0:086 fm with lattice sizes ranging from L ≈ 1:9 fm to L ≈ 2:8 fm. We measure with high statistical precision the light pseudoscalar mass mPS and decay constant fPS in a range 270 ≲ mPS ≲ 510 MeV and determine the low energy parameters f0 and $ {\bar{l}_{3,4}} $ of SU(2) chiral perturbation theory. We use the two values of the lattice spacing, several lattice sizes as well as different values of the light, strange and charm quark masses to explore the systematic effects. A first study of discretisation effects in light-quark observables and a comparison to Nf = 2 results are performed.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/832578e261fe30a3e9db67309d6dfd88ae5123ed

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Citations in the corpus

Hadronic molecules (2017, background): “There has been a remarkable progress in the last years in this field, see e.g. (Baron et al., 2010; Dürr et al., 2008; Edwards et al., 2011; Liu, 2017; Liu et al., 2012).”
Simulation of QCD with Nf = 2 + 1 flavors of non-perturbatively improved Wilson fermions (2014, methodology): “Similar large-scale simulations of QCD have recently been performed by the PACSCS simulating improved Wilson fermions [13], the QCDSF collaboration with Nf = 2 + 1 flavors of NP improved, smeared Wilson fermions [14], the Hadron Spectrum collaboration using Nf = 2 + 1 flavors of tree-level improved,”
Review of lattice results concerning low-energy particle physics (2016, methodology): “[39] is the single reference available; see Table 21 for the numerical values.”
Light Hadron Masses from Lattice QCD (2012, background): “The minimum pion mass one can reach with twisted mass fermions at a given lattice spacing is estimated by (Shindler, 2008) to be ∼ 300 MeV at a ∼ 0.07−0.1 fm which is roughly consistent with recent numerical results (Baron et al., 2010a).”
ΔS=2 and ΔC=2 bag parameters in the standard model and beyond from N$_f$=2+1+1 twisted-mass lattice QCD (2015, methodology): “SM ones. The computations presented in this paper have been performed making use of the N f = 2 + 1 + 1 dynamical quark gauge conﬁgurations generated by the European Twisted Mass Collaboration (ETMC) [28,29] at three values of the lattice spacing, a’0:06 0:09 fm, with the lightest pseudoscalar mass ”
Review of lattice results concerning low-energy particle physics (2010, methodology): “overlap dynamical quarks, but at a single lattice spacings and has also a red tag. The ETM collaboration has recently started performing calculations with Nf = 2+1+1 dynamical quarks and a ﬁrst paper [60] on the SU(2) LECs has appeared (a more recent paper [249] gives a progress report but not yet a”
FLAG Review 2019 (2019, methodology): “077(2)(2) ETM 10 [186] 2+1+1 A ◦ ⋆ 85.”