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Masses of tetraquark states in the hidden charm sector above D − D⁎ threshold
Nuclear Physics A ( IF 1.4 ) Pub Date : 2020-04-20 , DOI: 10.1016/j.nuclphysa.2020.121856
Tanvi Bhavsar , Manan Shah , Smruti Patel , P.C. Vinodkumar

In the diquark-antidiquark composition, we study the masses of hidden charm tetraquark systems (cqc¯q¯, csc¯s¯ and csc¯q¯) using a linear confinement potential. In this study, we have factorized the four body system into three subsequent two body systems. To remove degeneracy in the S and P wave masses of mesons and tetraquark states, the spin-spin, spin orbit and tensor components of the confined one gluon exchange interactions are employed. In this attempt, we have been able to assign the ψ(4230) as pure cqc¯q¯ tetraquark state. ψ(4360) and ψ(4390) as pure csc¯q¯ tetraquark states. According to our analysis ψ(4260) is found to be an admixture of two P11 cqc¯q¯ tetraquark states having mass 4259 MeV. Additionally, we have been able to predict the radiative decay width Γ(ψJ/ψγ), leptonic decay width Γe+e and hadronic decays of 1 tetraquark states. The status of X(3872) and Zcs are also identified as compact tetraquark states. Additionally, we have been able to predict the radiative decay width Γ(ψJ/ψγ), leptonic decay width Γe+e and hadronic decays of 1 tetraquark states.



中文翻译:

在隐藏的魅力部门的上述四夸克态的群众d  -  d 门槛

在双夸克-反双夸克的构成中,我们研究了隐藏的魅力四夸克系统的质量(CqC¯q¯CsC¯s¯CsC¯q¯)使用线性限制电位。在这项研究中,我们将四个身体系统分解为三个随后的两个身体系统。为了消除介子和四夸克态在S波和P波质量中的简并性,采用了有限的一种胶子交换相互作用的自旋自旋,自旋轨道和张量分量。在此尝试中,我们已经能够分配ψ4230 如纯 CqC¯q¯ 四夸克状态。 ψ4360ψ4390 如纯 CsC¯q¯四夸克状态。根据我们的分析ψ4260 被发现是两种的混合物 P1个1个 CqC¯q¯具有质量4259 MeV的四夸克态。此外,我们已经能够预测辐射衰减宽度ΓψĴ/ψγ,轻子衰变宽度 ΓË+Ë- 和强子衰变 1个--四夸克状态。X(3872)和的状态žCs也被确定为紧密四夸克态。此外,我们已经能够预测辐射衰减宽度ΓψĴ/ψγ,轻子衰变宽度 ΓË+Ë- 和强子衰变 1个-- 四夸克状态。

更新日期:2020-04-20
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