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- W2912165557 abstract "Lattice QCD can provide a direct determination of meson electromagnetic form factors, making predictions for upcoming experiments at Jefferson Lab. The form factors are a reflection of the bound-state nature of the meson and so these calculations give information about how confinement by QCD affects meson internal structure. The region of high squared (space-like) momentum-transfer, $Q^2$, is of particular interest because perturbative QCD predictions take a simple form in that limit that depends on the meson decay constant. We previously showed incite{jonnaff} that, up to $Q^2$ of 6 $mathrm{GeV}^2$, the form factor for a `pseudo-pion' made of strange quarks was significantly larger than the asymptotic perturbative QCD result and showed no sign of heading towards that value at higher $Q^2$. Here we give predictions for real mesons, the $K^+$ and $K^0$, in anticipation of JLAB results for the $K^+$ in the next few years. We also give results for a heavier meson, the $eta_c$, up to $Q^2$ of 25 $mathrm{GeV}^2$ for a comparison to perturbative QCD in a higher $Q^2$ regime." @default.
- W2912165557 created "2019-02-21" @default.
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- W2912165557 date "2019-05-29" @default.
- W2912165557 modified "2023-10-16" @default.
- W2912165557 title "Meson electromagnetic form factors from lattice QCD" @default.
- W2912165557 doi "https://doi.org/10.22323/1.334.0298" @default.
- W2912165557 hasPublicationYear "2019" @default.
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