Hadronic decays of η and η′ with coupled channels

被引：44

作者：

Beisert, N ^{[1
]}

Borasoy, B ^{[1
]}

机构：

[1] Tech Univ Munich, Dept Phys, D-85747 Garching, Germany

来源：

NUCLEAR PHYSICS A | 2003年 / 716卷

关键词：

chiral effective Lagrangians; hadronic decays of mesons; eta and eta '; coupled channels; final state interactions;

D O I：

10.1016/S0375-9474(02)01585-3

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 hadronic decays eta --> pipipi. eta' --> pipipi and eta' --> etapipi are investigated within a U(3) chiral unitary approach. Final state interactions are included by deriving the effective s-wave potentials for meson-meson scattering from the chiral effective Lagrangian and iterating them in a Bethe-Salpeter equation. With only a small set of parameters we are able to explain both rate,, and spectral shapes of these decays. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：186 / 208

页数：23

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