QCD PERTURBATION-THEORY AT LOW ENERGIES

被引：77

作者：

MATTINGLY, AC

STEVENSON, PM

机构：

[1] T. W. Bonner Laboratory, Department of Physics, Rice University, Houston

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.69.1320

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We apply the optimization procedure based on the principle of minimal sensitivity to the third-order calculation of R(e)+e-. The effective couplant remains finite, freezing to a value alpha(s)/pi = 0.26 at low energies. Using Poggio-Quinn-Weinberg smearing we find good agreement between theory and experiment right down to zero energy.

引用

页码：1320 / 1323

页数：4

共 30 条

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