2-LOOP EFFECTS IN QCD SUM-RULES FOR LIGHT MESONS

被引：45

作者：

SURGULADZE, LR ^{[1
]}

TKACHOV, FV ^{[1
]}

机构：

[1] TBILISI STATE UNIV,DEPT HIGH ENERGY PHYS,TBILISI 380086,GEORGIA,USSR

来源：

NUCLEAR PHYSICS B | 1990年 / 331卷 / 01期

关键词：

D O I：

10.1016/0550-3213(90)90017-8

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We calculate two-loop corrections to the coefficient functions of the dim ≤ 4 contributions to the vacuum correlator of two flavour-diagonal vector, scalar, and pseudoscalar currents. We formulate the renormalization-group invariant criteria for the convergence of the perturbation theory series for the coefficient functions. We also study effects of the calculated corrections on the sum rules for the ρ{variant}, φ{symbol}, δ(980) and ε(1300) mesons. © 1990.

引用

页码：35 / 65

页数：31

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