论文标题
$ x（4700）\ to j/ψϕ $在轻单元总和规则中的强耦合$ g_ {x j/ψϕ} $ of $ x（4700）\
The strong coupling $g_{X J/ψϕ}$ of $X(4700) \to J/ψϕ$ in the light-cone sum rules
论文作者
论文摘要
我们以$ x（4700）$为$ x（4700）$分配标量tetraquark和D-Wave Tetraquark State，并在轻单元规则的框架内计算衰减$ x（4700）$ $ \ to j/ψϕ $的宽度。强耦合$ g_ {x j/ψϕ} $是通过考虑软梅森近似技术来获得的。我们还研究了SVZ Sum规则框架中$ x（4700）$的质量和衰减常数。我们对质量的预测与实验测量一致，并且对于$ x（4700）$ $ \ $ $ \的衰减宽度$ \ to j/ψϕ $支持$ x（4700）$的可能性，如果$ x（4700）如果$ x（4700）$ $ \ to j/ψϕ $是$ x/ψϕ $ $ $ $ $ $ $ $ $ $ $ \ to j/ψϕ $不是主要的，还有其他衰减。
We assign the scalar tetraquark and the D-wave tetraquark state for $X(4700)$ and calculate the width of the decay $X(4700)$ $\to J/ψϕ$ within the framework of light-cone sum rules. The strong coupling $g_{X J/ψϕ}$ is obtained by considering the technique of soft-meson approximation. We also investigate the mass and the decay constant of $X(4700)$ in the framework of SVZ sum rules. Our prediction for the mass is in agreement with the experimental measurement, and that for the decay width of $X(4700)$ $\to J/ψϕ$ support the possibility that $X(4700)$ could be a scalar tetraquark state if $X(4700)$ $\to J/ψϕ$ is the predominant decay channel, or a D-wave tetraquark state if $X(4700)$ $\to J/ψϕ$ is not the predominant one and there exist other decays.
