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. 2008 Nov 21;322(5905):1224-7.
doi: 10.1126/science.1163233.

Ab initio determination of light hadron masses

S Dürr  1 , Z Fodor, J Frison, C Hoelbling, R Hoffmann, S D Katz, S Krieg, T Kurth, L Lellouch, T Lippert, K K Szabo, G Vulvert
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Free article

Ab initio determination of light hadron masses

S Dürr et al. Science. .
Free article

Abstract

More than 99% of the mass of the visible universe is made up of protons and neutrons. Both particles are much heavier than their quark and gluon constituents, and the Standard Model of particle physics should explain this difference. We present a full ab initio calculation of the masses of protons, neutrons, and other light hadrons, using lattice quantum chromodynamics. Pion masses down to 190 mega-electron volts are used to extrapolate to the physical point, with lattice sizes of approximately four times the inverse pion mass. Three lattice spacings are used for a continuum extrapolation. Our results completely agree with experimental observations and represent a quantitative confirmation of this aspect of the Standard Model with fully controlled uncertainties.

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