On the nature of X(3960)
On the nature of X(3960)
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DOI：
10.1140/epjc/s10052-023-11527-6
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发表时间：
2023-02
期刊：
影响因子：
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通讯作者：
Yu Chen;Hao Chen;C. Meng;Hongqun Qi;Han-qing Zheng
中科院分区：
文献类型：
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作者：
Yu Chen;Hao Chen;C. Meng;Hongqun Qi;Han-qing Zheng
最近LHCb合作组观测到了一个被称为X（3960）的近阈值增强。采用K矩阵方法和Flatté型参数化模型对、、和进行了综合分析。利用极点计数规则和谱密度函数求和规则表明，在当前统计下，这种近阈态可能具有束缚态和连续态的混合性质。
A near-threshold enhancement in thesystem, dubbed asX(3960), is observed by the LHCb collaboration recently. A combined analysis on,, andis performed using both aK-matrix approach offour-point contact interactions and a model of Flatté-like parameterizations. The use of the pole counting rule and spectral density function sum rule indicate, under current statistics, that thisnear-threshold state has probably the mixed nature of aconfining state andcontinuum.