ar X iv : h ep - l at / 0 60 80 21 v 2 1 4 Ju n 20 07 The pion form factor from lattice QCD with two dynamical flavours
نویسندگان
چکیده
We compute the electromagnetic form factor of the pion using non-perturbatively O(a) improved Wilson fermions. The calculations are done for a wide range of pion masses and lattice spacings. We check for finite size effects by repeating some of the measurements on smaller lattices. The large number of lattice parameters we use allows us to extrapolate to the physical point. For the square of the charge radius we find ˙ r 2 ¸ = 0.441(19) fm 2 , in good agreement with experiment.
منابع مشابه
ar X iv : h ep - l at / 0 60 80 21 v 1 2 8 A ug 2 00 6 The pion form factor from lattice QCD with two dynamical flavours
We compute the electromagnetic form factor of the pion using non-perturbatively O(a) improved Wilson fermions. The calculations are done for pion masses down to 400 MeV and for lattice spacings of 0.07 – 0.11 fm. We check for finite size effects by repeating some of the measurements on smaller lattices. The large number of lattice parameters we use allows us to extrapolate to the physical point...
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