f0(980)-meson as a K(K)over-bar molecule in a phenomenological Lagrangian approach

被引：0

作者：

Branz, T. ^{[1
]}

Gutsche, T. ^{[1
]}

Lyubovitskij, V. ^{[1
]}

机构：

[1] Univ Tubingen, Inst Theoret Phys, D-72076 Tubingen, Germany

来源：

EUROPEAN PHYSICAL JOURNAL A | 2008年 / 37卷 / 03期

关键词：

D O I：

10.1140/epja/i2008-10635-1

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：

We discuss a possible interpretation of the f(0)(980)-meson as a hadronic molecule-a bound state of K and (K) over bar mesons. Using a phenomenological Lagrangian approach we calculate the strong f(0)( 980) -> pi pi and electromagnetic f(0)(980) -> gamma gamma decays. The compositeness condition provides a self-consistent method to determine the coupling constant between f(0) and its constituents, K and (K) over bar. Form factors governing the decays of the f(0)(980) are calculated by evaluating the kaon loop integrals. The predicted f(0)(980) -> pi pi and f(0)(980) -> gamma gamma decay widths are in good agreement with available data and results of other theoretical approaches.

引用

页码：303 / 317

页数：15

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