Pion radii in the nonlocal chiral quark model

被引：16
|
作者：
Dorokhov, AE [1 ]
Radzhabov, AE [1 ]
Volkov, MK [1 ]
机构：
[1] Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Russia
来源：
EUROPEAN PHYSICAL JOURNAL A | 2004年 / 21卷 / 01期
关键词：
D O I：
10.1140/epja/i2003-10177-0
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 electromagnetic radius of a charged pion and the transition radius of a neutral pion are calculated in the framework of the nonlocal chiral quark model. It is shown in this model that the vector meson contributions to the pion radii are noticeably suppressed in comparison with a similar contribution in the local Nambu-Jona-Lasinio model. The form factor for the process gamma(*)pi(+)pi(-) is calculated for -1 GeV2< q(2) < 1.6 GeV2. Our results are in satisfactory agreement with experimental data.
引用
收藏
页码：155 / 159
页数：5
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