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arXiv 1010.2869hep-ph
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核子质量的新求和定则

New Sum Rule Determination of the Nucleon Mass

N. F. Nasrallah, K. Schilcher

摘要:

本文提出了一种新的核子质量QCD计算方法。它利用一个多项式内核的色散积分定制,实际上消除了未知的1/2+和1/2-连续的贡献。这种方法避免了先前求和规则计算中使用的Borel核的任意性和其他缺点。我们的方法产生稳定的结果的核子质量和耦合的标准值的凝聚。核子质量m_{N} =(0.945 \pm .045)GeV的预测与实验符合得很好。

英文摘要:

A new QCD calculation of the mass of the nucleon is presented. It makes use of a polynomial kernel in the dispersion integrals tailored to practically eliminate the contribution of the unknown 1/2+ and 1/2- continuum. This approach avoids the arbitrariness and other drawbacks attached to the Borel kernel used in previous sum rules calculations. Our method yields stable results for the nucleon mass and coupling for standard values of the condensates. The prediction of the nucleon mass m_{N}=(0.945 \pm .045) GeV is in good agreement with experiment.

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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