Physical results from 2+1 flavor Domain Wall QCD

By E. Scholz. 2008

216 citations recorded by the source corpus.

We review recent results for the chiral behavior of meson masses and decay constants and the determination of the light quark masses by the RBC and UKQCD collaborations. We find that one-loop SU(2) chiral perturbation theory represents the behavior of our lattice data better than one-loop SU(3) chiral perturbation theory in both the pion and kaon sectors. The simulations have been performed using the Iwasaki gauge action at two different lattice spacings with the physical spatial volume held approximately fixed at (2.7fm){sup 3}. The Domain Wall fermion formulation was used for the 2+1 dynamical quark flavors: two (mass degenerate) light flavors with masses as light as roughly 1/5 the mass of the physical strange quark mass and one heavier quark flavor at approximately the value of the physical strange quark mass, On the ensembles generated with the coarser lattice spacing, we obtain for the physical average up- and down-quark and strange quark masses m{sub ud}{sup {ovr MS}} (2 GeV) = 3.72(0.16){sub stat}(0.33){sub ren}(0.18){sub syst}MeV and m{sub s}{sup {ovr MS}} (2 GeV) = 107.3(4.4){sub stat}(9.7){sub ren}(4.9){sub syst} MeV, respectively, while they find for the pion and kaon decay constants f{sub {pi}} = 124.1(3.6){sub stat}(6.9){sub syst}MeV, f{sub K} = 149.6(3.6){sub stat}(6.3){sub syst}more » MeV. The analysis for the finer lattice spacing has not been fully completed yet, but we already present some first (preliminary) results.« less

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/716eb1cc31f98dda732fd7fee1b38044fd4d5a5a

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In Nuclear and High Energy Physics

Citations in the corpus

FLAG Review 2019 (2019, methodology): “72(78) RBC/UKQCD 08 [163] A ◦ ⋆ ⋆ − 3.”
Nonperturbative QCD Simulations with 2+1 Flavors of Improved Staggered Quarks (2009, background): “They obtain, using a single, comparable lattice spacing,B̂K = 0.720± 0.019 (Allton et al., 2008), where the dominant uncertainty is due to discretization errors, and is estimated to be∼ 4% from the scaling behavior of quenched data.”
Light hadron spectroscopy using domain wall valence quarks on an asqtad sea (2008, unknown): “[109] C. Allton et al. (2008), 0804.0473.”
Kaon Decays in the Standard Model (2011, unknown): “…et al., 2010) Γπµ2(γ) = 38.408± 0.007 (µs)−1 (4.14) and of the kaon (Antonelli et al., 2010b) ΓKµ2(γ) = 51.25± 0.16 (µs)−1, (4.15) 2 Based on the results from Allton et al. (2008); Aoki et al. (2009); Aubin et al. (2008, 2004); Bazavov et al. (2010, 2009); Beane et al. (2007); Bernard et al.…”
Review of lattice results concerning low-energy particle physics (2016, methodology): “21(3)(–) RBC/UKQCD 08 [145] 2+1 A ◦ ◦ 0.”