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- W3010447479 abstract "In this article, we take the point of view that the light scalar meson $a_0(980)$ is a conventional $qbar{q}$ state, and calculate the coupling constants $g_{a_0etapi^0}$ and $g_{a_0 eta'pi^0}$ with the light-cone QCD sum rules. The central value of the coupling constant $g_{a_0etapi^0}$ is consistent with the one extracted from the radiative decay $phi(1020)to a_0(980)gamma to eta pi^0 gamma$. The central value and lower bound of the decay width $Gamma_{a_{0}to eta pi^0}=127^{+84}_{-48} rm{MeV} $ are compatible with the experimental data of the total decay width $Gamma_{a_0(980)}=(50-100) rm{MeV}$ from the Particle Data Group with very model dependent estimation (the decay width can be much larger), while the upper bound is too large. We give possible explanation for the discrepancy between the theoretical calculation and experimental data." @default.
- W3010447479 created "2020-03-13" @default.
- W3010447479 creator A5060185042 @default.
- W3010447479 date "2008-03-02" @default.
- W3010447479 modified "2023-10-17" @default.
- W3010447479 title "Analysis of the strong coupling constants $g_{a_0etapi^0}$ and $g_{a_0eta'pi^0}$ with light-cone QCD sum rules" @default.
- W3010447479 hasPublicationYear "2008" @default.
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