Dynamical study of light scalar mesons below 1 GeV in a flux-tube model

  • The light scalar mesons below 1 GeV configured as tetraquark systems are studied in the framework of the flux-tube model. Comparative studies indicate that a multi-body confinement, instead of the additive two-body confinement, should be used in a multiquark system. The σ and κ mesons could be well accommodated in the diquark-antidiquark tetraquark picture, and could be colour-confinement resonances. The m a0(980) and m f0(980) mesons are not described as m KK molecular states and nsns diquark-antidiquark states. However, the mass of the first radial excited state of the diquark-antidiquark state, nnnn is 1019 MeV, is close to the experimental data of the m f0(980).
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DENG Cheng-Rong, PING Jia-Lun, ZHOU Ping and WANG Fan. Dynamical study of light scalar mesons below 1 GeV in a flux-tube model[J]. Chinese Physics C, 2013, 37(3): 033101. doi: 10.1088/1674-1137/37/3/033101
DENG Cheng-Rong, PING Jia-Lun, ZHOU Ping and WANG Fan. Dynamical study of light scalar mesons below 1 GeV in a flux-tube model[J]. Chinese Physics C, 2013, 37(3): 033101.  doi: 10.1088/1674-1137/37/3/033101 shu
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Received: 2012-03-31
Revised: 2012-10-13
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Dynamical study of light scalar mesons below 1 GeV in a flux-tube model

    Corresponding author: PING Jia-Lun,

Abstract: The light scalar mesons below 1 GeV configured as tetraquark systems are studied in the framework of the flux-tube model. Comparative studies indicate that a multi-body confinement, instead of the additive two-body confinement, should be used in a multiquark system. The σ and κ mesons could be well accommodated in the diquark-antidiquark tetraquark picture, and could be colour-confinement resonances. The m a0(980) and m f0(980) mesons are not described as m KK molecular states and nsns diquark-antidiquark states. However, the mass of the first radial excited state of the diquark-antidiquark state, nnnn is 1019 MeV, is close to the experimental data of the m f0(980).

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