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- W2969765723 abstract "Inspired by the recent observation of exotic resonances $X(4140)$, $X(4274)$, $X(4350)$, $X(4500)$, and $X(4700)$ reported by several experiment collaborations, we investigated the four-quark system $csoverline{c}overline{s}$ with quantum numbers ${J}^{PC}={1}^{++}$ and ${0}^{++}$ in the framework of the chiral quark model. Two configurations, diquark-antidiquark and meson-meson, with all possible color structures are considered. The results show that no molecular state can be formed, but the resonance may exist if the color structure of the meson-meson configuration is $8ensuremath{bigotimes}8$. In the present calculation, the $X(4274)$ can be assigned as the $csoverline{c}overline{s}$ tetraquark states with ${J}^{PC}={1}^{++}$, but the energy of $X(4140)$ is too low to be regarded as the tetraquark state. $X(4350)$ can be a good candidate of the compact tetraquark state with ${J}^{PC}={0}^{++}$. When the radial excitation is taken into account, the $X(4700)$ can be explained as the $2S$ radial excited tetraquark state with ${J}^{PC}={0}^{++}$. As for $X(4500)$, there is no matching state in our calculation." @default.
- W2969765723 created "2019-08-29" @default.
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- W2969765723 date "2019-05-23" @default.
- W2969765723 modified "2023-10-14" @default.
- W2969765723 title "Investigation of <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>c</mml:mi><mml:mi>s</mml:mi><mml:mover accent=true><mml:mi>c</mml:mi><mml:mo stretchy=false>¯</mml:mo></mml:mover><mml:mover accent=true><mml:mi>s</mml:mi><mml:mo stretchy=false>¯</mml:mo></mml:mover></mml:math> tetraquark in the chiral quark model" @default.
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- W2969765723 doi "https://doi.org/10.1103/physrevd.99.094032" @default.
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