f(0)(980)-meson as a K(K)over-bar molecule in a phenomenological Lagrangian approach

Branz, T.; Gutsche, T.; Lyubovitskij, V.

Abstract

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.

Más información

Título según WOS: ID WOS:000259580200005 Not found in local WOS DB
Título de la Revista: EUROPEAN PHYSICAL JOURNAL A
Volumen: 37
Número: 3
Editorial: Springer
Fecha de publicación: 2008
Página de inicio: 303
Página final: 317
DOI:

10.1140/epja/i2008-10635-1

Notas: ISI