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- W2775483546 abstract "The mixing angle, mass and couplings of the light scalar mesons $f_0(500)$ and $f_0(980)$ are calculated in the framework of QCD two-point sum rule approach by assuming that they are tetraquarks with diquark-antidiquark structures. The mesons are treated as mixtures of the heavy $|Hrangle =([su][bar s bar u]+[sd][bar s bar d])/sqrt 2$ and light $|Lrangle =[ud][bar u bar d]$ scalar diquark-antidiquark components. We extract from corresponding sum rules the mixing angles $varphi_H$ and $varphi_L$ of these states and evaluate the masses and couplings of the particles $ f_0(500) $ and $f_0(980)$." @default.
- W2775483546 created "2017-12-22" @default.
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- W2775483546 date "2018-06-01" @default.
- W2775483546 modified "2023-10-03" @default.
- W2775483546 title "The structure, mixing angle, mass and couplings of the light scalar f0(500) and f0(980) mesons" @default.
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- W2775483546 doi "https://doi.org/10.1016/j.physletb.2018.03.085" @default.
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