期刊
EUROPEAN PHYSICAL JOURNAL A
卷 37, 期 3, 页码 303-317出版社
SPRINGER
DOI: 10.1140/epja/i2008-10635-1
关键词
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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.
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