Matches in SemOpenAlex for { <https://semopenalex.org/work/W4237202962> ?p ?o ?g. }
- W4237202962 abstract "The strange quark content of the nucleon $⟨N|overline{s}s|N⟩$ is calculated in dynamical lattice QCD employing the overlap fermion formulation. For this quantity, exact chiral symmetry guaranteed by the Ginsparg-Wilson relation is crucial to avoid large contamination due to a possible operator mixing with $overline{u}u+overline{d}d$. Gauge configurations are generated with two dynamical flavors on a ${16}^{3}ifmmodetimeselsetexttimesfi{}32$ lattice at a lattice spacing $aensuremath{simeq}0.12text{ }text{ }mathrm{fm}$. We directly calculate the relevant three-point function on the lattice including a disconnected strange quark loop utilizing the techniques of the all-to-all quark propagator and low-mode averaging. Our result ${f}_{{T}_{s}}={m}_{s}⟨N|overline{s}s|N⟩/{M}_{N}=0.032(8{)}_{mathrm{stat}}(22{)}_{mathrm{sys}}$, where ${m}_{s}$ and ${M}_{N}$ are strange quark and nucleon masses, is in good agreement with our previous indirect estimate using the Feynman-Hellmann theorem." @default.
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- W4237202962 date "2011-06-13" @default.
- W4237202962 modified "2023-09-29" @default.
- W4237202962 title "Nucleon strange quark content from two-flavor lattice QCD with exact chiral symmetry" @default.
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- W4237202962 doi "https://doi.org/10.1103/physrevd.83.114506" @default.
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