Pion-distribution amplitude within the instanton model

被引：19

作者：

Anikin, IV ^{[1
]}

Dorokhov, AE ^{[1
]}

Tomio, L ^{[1
]}

机构：

[1] Joint Inst Nucl Res, Dubna 141980, Moscow Oblast, Russia

来源：

PHYSICS OF ATOMIC NUCLEI | 2001年 / 64卷 / 07期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1134/1.1389562

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The leading-twist pion-distribution amplitude is obtained at a low normalization scale of order rho (c) (inverse average size of an instanton). Pion dynamics, consistent with gauge invariance and low-energy theorems, is considered within the instanton vacuum model. The results are QCD-evolved to higher momentum-transfer values and are in agreement with recent data from CLEO on the pion transition form factor. It is also shown that some previous calculations violate the axial Ward-Takahashi identity. (C) 2001 MAIK "Nauka/Interperiodica".

引用

页码：1329 / 1336

页数：8

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