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arXiv 2408.05908hep-phhep-ex
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受X(2600)发现启发的同位旋标量2^{-+}介子态的构造

Construction of Isoscalar $2^{-+}$ Mesonic States Inspired by the $X(2600)$ Discovery

Li-Ming Wang, Wen-Xin Tian, Ting-Yan Li, Cheng-Xi Liu, Xiang Liu

AI总结:

受BESIII发现X(2600)的启发,本文利用势模型和夸克对产生模型系统研究了同位旋标量赝张量介子的质量谱与强衰变,预言了未观测到的径向激发态,并排除了X(2600)属于该类介子的可能。

摘要:

BESIII对X(2600)的观测表明,其自旋-宇称量子数的一种可能指定是J^{PC}=2^{-+}。这一发现促使我们通过全面的谱学研究系统地重新审视同位旋标量赝张量介子态。在这项工作中,我们采用势模型计算具有不同径向量子数的同位旋标量赝张量介子态的质量谱。此外,我们利用夸克对产生模型分析了它们在Okubo-Zweig-Iizuka(OZI)规则允许下的强衰变行为。我们的研究结果提供了关于其共振参数和部分衰变宽度的有价值信息,结合当前实验数据,这些信息有助于识别已观测到的同位旋标量赝张量态。重要的是,我们还预言了若干实验上尚未观测到的同位旋标量赝张量介子的径向激发态。此外,我们排除了X(2600)被归类为同位旋标量赝张量介子的可能性,这对于阐明X(2600)的性质至关重要。

英文摘要:

The BESIII observation of the $X(2600)$ suggests that one possible assignment for its spin-parity quantum numbers is $J^{PC}=2^{-+}$. This finding motivates us to systematically revisit isoscalar pseudotensor mesonic states through a comprehensive spectroscopic study. In this work, we employ a potential model to calculate the mass spectrum of isoscalar pseudotensor meson states with varying radial quantum numbers. Additionally, we analyze their strong decay behaviors, as allowed by the Okubo-Zweig-Iizuka (OZI) rule, using the quark pair creation model. Our findings yield valuable information about their resonant parameters and partial decay widths, which can aid in identifying the observed isoscalar pseudotensor states when combined with current experimental data. Importantly, we also predict several radial excitations of isoscalar pseudotensor mesons that remain unobserved experimentally. Furthermore, we exclude the $X(2600)$ from being classified as an isoscalar pseudotensor meson, which is critical for elucidating the properties of the $X(2600)$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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