Ab Initio Determination of Light Hadron Masses
Ab Initio Determination of Light Hadron Masses
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DOI：
10.1126/science.1163233
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发表时间：
2008-11
期刊：
影响因子：
56.9
通讯作者：
S. Durr;Z. Fodor;J. Frison;C. Hoelbling;C. Hoelbling;C. Hoelbling;R. Hoffmann;S. Katz;S. Krieg;T. Kurth;L. Lellouch;T. Lippert;K. Szabó;G. Vulvert
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文献类型：
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作者：
S. Durr;Z. Fodor;J. Frison;C. Hoelbling;C. Hoelbling;C. Hoelbling;R. Hoffmann;S. Katz;S. Krieg;T. Kurth;L. Lellouch;T. Lippert;K. Szabó;G. Vulvert
可见宇宙中超过99%的质量由质子和中子组成。这两种粒子都比它们的夸克和胶子成分重得多，粒子物理学的标准模型应该解释这种差异。我们提出了一个完整的从头计算质子，中子和其他轻强子的质量，使用晶格量子色动力学。π介子质量低至190兆电子伏特，用来外推到物理点，晶格尺寸约为反π介子质量的四倍。三个晶格间距用于连续外推。我们的结果与实验观察完全一致，并代表了这方面的标准模型与完全控制的不确定性的定量确认。
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.