a0K+K−vertex in light cone QCD sum rules
نویسندگان
چکیده
منابع مشابه
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In this article, we take the point of view that the light scalar meson a0(980) is a conventional qq̄ state, and calculate the coupling constants ga0ηπ0 and ga0η′π0 with the light-cone QCD sum rules. The central value of the coupling constant ga0ηπ0 is consistent with the one extracted from the radiative decay φ(1020) → a0(980)γ → ηπ0γ. The central value and lower bound of the decay width Γa0→ηπ0...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2004
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.69.074023