DETERMINATION OF THE STRONG COUPLING-CONSTANT FROM THE CHARMONIUM SPECTRUM

被引：155

作者：

ELKHADRA, AX

HOCKNEY, G

KRONFELD, AS

MACKENZIE, PB

机构：

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.69.729

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Lattice gauge theory techniques have recently achieved sufficient accuracy to permit a determination of the strong coupling constant from the 1P-1S splitting in the charmonium system, with all systematic errors estimated quantitatively. The present result is alpha(MSBAR)(5 GeV) = 0.174 +/- 0.012, or, equivalently, LAMBDA(MS)/(4) = 160(-37)+47 MeV (MSBAR denotes the modified minimal subtraction scheme).

引用

页码：729 / 732

页数：4