Decays ρ- → ηπ- and τ- → η(η′)π- ν in the Nambu-Jona-Lasinio model

被引：25

作者：

Volkov, M. K. ^{[1
]}

Kostunin, D. G. ^{[1
]}

机构：

[1] Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Russia

来源：

PHYSICAL REVIEW D | 2012年 / 86卷 / 01期

关键词：

MESON;

D O I：

10.1103/PhysRevD.86.013005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The widths of the decays rho(-) -> eta pi(-) and tau(-) -> eta(eta')pi(-) nu are calculated in the framework of the Nambu-Jona-Lasinio model. It is shown that these decays are defined by the u and d quark mass difference. It leads to the suppression of these decays in comparison with the main decay modes. In the process rho(-) -> eta pi(-) the intermediate scalar a(0)(-) state is taken into account. For the tau decays the intermediate states with a(0)(-), rho(-)(770) and rho(-) (1450) mesons are used. Our estimates are compared with the results obtained in other works.

引用

页数：4

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