CONFORMAL CONSTRAINTS AND THE EVOLUTION OF THE NONSINGLET MESON DISTRIBUTION AMPLITUDE

被引：123

作者：

MULLER, D

机构：

[1] Stanford Linear Accelerator Center, Stanford University, Stanford

来源：

PHYSICAL REVIEW D | 1994年 / 49卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.49.2525

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using conformal Ward identities, the influence of conformal symmetry breaking on the evolution of the flavor-nonsinglet quark-antiquark distribution amplitude is investigated in dimensional regularization and a minimal subtracted scheme. It is found that a conformal consistency relation provides some simplification for construction of the distribution amplitude. Both the evolution in the next-to-leading approximation and a closed expression for the 0(alpha(s) ) correction to the eigenfunctions of the evolution kernel in the beta = 0 case can thus be determined analytically.

引用

页码：2525 / 2535

页数：11

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