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| Journal Article | FZJ-2017-05630 |
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2007
Springer
Berlin
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Please use a persistent id in citations: doi:10.1140/epjc/s10052-007-0295-6
Abstract: 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(20) fm^2, in good agreement with experiment.
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