A QCD CALCULATION OF THE PION SCALAR FORM-FACTOR (SIGMA-TERM)

被引：3

作者：

BORN, R

HURTH, T

SCHILCHER, K

WU, YL

机构：

[1] Johannes Gutenberg-Universität

来源：

PHYSICS LETTERS B | 1991年 / 266卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(91)91070-C

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The scalar pion form factor (also known as sigma-term) is calculated from the QCD Green function approach. The result at q2 = 0 is in excellent agreement with the PCAC prediction. We also present the q2-dependence of the form factor which allows us to obtain the scalar radius of the pion as <r2>pi-s = 12.6 +/- 1.3 GeV-2.

引用

页码：463 / 466

页数：4

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