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).
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页码：729 / 732
页数：4
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