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arXiv 2409.08051hep-ph
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D波底夸克态的系统分析:QCD求和规则方法

Systematic analysis of the D-wave charmonium states with the QCD sum rules

North China Electric Power University(华北电力大学)

Qi Xin, Zhi-Gang Wang

AI总结:

本文利用QCD求和规则系统分析了D波底夸克态的质量预测,并与实验结果对比,提出未来检测前景。

摘要:

我们通过QCD求和规则系统研究了1D底夸克态的自旋三重态(具有J^PC=1^--、2^--、3^--)和自旋单态(具有J^PC=2^-+)。预测的质量M_ψ1=3.77±0.09 GeV支持将ψ1识别为ψ(3770),预测的质量M_ψ2=3.82±0.09 GeV与报告的ψ2(3823)观察结果一致,预测的质量M_ψ3=3.84±0.08 GeV支持将ψ3识别为ψ3(3842)。此外,我们估计未观测到的ηc2态位于3.83±0.09 GeV,建议未来检测前景。更多的实验数据将有助于解开靠近开放底夸克阈值的底夸克态质量谱。

英文摘要:

We systematically study the 1D charmonium spin-triplet (with the $J^{PC}=1^{--}, 2^{--}, 3^{--}$) and spin-singlet (with the $J^{PC}=2^{-+}$) via the QCD sum rules in comparison with the recent experimental results. The predicted mass $M_{ψ_1}=3.77\pm{0.09}\,\rm {GeV}$ supports identifying the $ψ_1$ as the $ψ(3770)$, the value $M_{ψ_2}=3.82\pm{0.09}\,\rm {GeV}$ is consistent with the reported observation of the $ψ_2(3823)$, the prediction $M_{ψ_3}=3.84\pm{0.08}\,\rm {GeV}$ supports identifying the $ψ_3$ as the $ψ_3(3842)$. Additionally, we estimate the unobserved $η_{c2}$ state lies at $3.83\pm{0.09}\,\rm {GeV}$, and suggest detection prospects in the future. More experimental data will help us to unravel the mass spectrum of the charmonium states near the open-charm thresholds.

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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