QCD spectrum with three quark flavors

By C. Bernard, T. Burch, T. DeGrand, S. Datta, C. DeTar, S. Gottlieb, U. Heller, K. Orginos, R. Sugar, D. Toussaint. 2001

249 citations recorded by the source corpus.

We present results from a lattice hadron spectrum calculation using three flavors of dynamical quarks -- two light and one strange -- and quenched simulations for comparison. These simulations were done using a one-loop Symanzik improved gauge action and an improved Kogut-Susskind quark action. The lattice spacings, and hence also the physical volumes, were tuned to be the same in all the runs to better expose differences due to flavor number. Lattice spacings were tuned using the static quark potential, so as a by-product we obtain updated results for the effect of sea quarks on the static quark potential. We find indications that the full QCD meson spectrum is in better agreement with experiment than the quenched spectrum. For the 0{sup ++} (a{sub 0}) meson we see a coupling to two pseudoscalar mesons, or a meson decay on the lattice.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/85a077b4229ce86e1b18155f6b28b992ce9f4b90

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Citations in the corpus

Is there still any Tc mystery in lattice QCD? Results with physical masses in the continuum limit III (2010, result): “We find an agreement between our data and the HRG ones with “physical” masses, while the hotQCD collaboration results are in agreement with the HRG model only if the spectrum is “distorted” as it was directly measured on the lattice [24, 36, 37].”
The QCD transition temperature: Results with physical masses in the continuum limit (2006, methodology): “When extracting nucleon masses, we observed similar ambiguities when using different quark sources as described in [13].”
Scattering processes and resonances from lattice QCD (2017, background): “…width which decreases, until at a certain point the width becomes zero and the ρ becomes a stable bound-state (Ali Khan et al., 2002; Allton et al., 1999; Bernard et al., 1993, 2001; DeGrand, 1991; Dudek et al., 2013a,b; Feng et al., 2015, 2011; Leinweber and Cohen, 1994; Lin et al., 2009; Wilson…”
Light Hadron Masses from Lattice QCD (2012, background): “The first large scale computation of the light hadron spectrum with a pair of light and one strange sea quark was performed by the MILC collaboration (Aubin et al., 2004; Bernard et al., 2001)25.”