Comparison of Lattice and Chiral Perturbation Theory calculations of pion scattering lengths
classification
✦ hep-ph
hep-lat
keywords
latticecalculationchirallengthsperturbationpionscatteringtheory
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I compare the lattice calculation of Fukugita et al. for the pion S-wave scattering lengths to the predictions of Chiral Perturbation Theory to two loop accuracy. I find good agreement, despite the use of the quenched approximation in the lattice calculation.
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