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arXiv 0910.3102hep-phhep-lat
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从全格点量子色动力学得到的精确粲奇异质量比和轻夸克质量

Precise charm to strange mass ratio and light quark masses from full lattice QCD

C. T. H. Davies, C. McNeile, K. Y. Wong, E. Follana, R. Horgan, K. Hornbostel, G. P. Lepage, J. Shigemitsu, H. Trottier

摘要:

我们首次在全格点量子色动力学中用一种统一的形式来处理粲夸克、奇夸克和轻价夸克,从而能够确定夸克质量的比例为1%。对于$m_c/m_s$,我们得到11.85(16),比当前PDG平均值精确一个数量级。结合1%的粲夸克质量的测定,现在可能得到$\bar{m}_s(2{\rm GeV}) =$ 92.4(1.5)MeV。$m_s/m_l = 27.2(3) $的MILC结果得到$\bar{m}_l(2{\rm GeV})$ = 3.40(7)MeV,对应于$u$和$d$夸克质量的平均值。

英文摘要:

By using a single formalism to handle charm, strange and light valence quarks in full lattice QCD for the first time, we are able to determine ratios of quark masses to 1%. For $m_c/m_s$ we obtain 11.85(16), an order of magnitude more precise than the current PDG average. Combined with 1% determinations of the charm quark mass now possible this gives $\bar{m}_s(2{\rm GeV}) =$ 92.4(1.5) MeV. The MILC result for $m_s/m_l = 27.2(3) $ yields $\bar{m}_l(2{\rm GeV})$ = 3.40(7) MeV for the average of $u$ and $d$ quark masses.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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