arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.11526hep-ph
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$T\neq0$上的轴张量介子族

Axial-tensor Meson Family at $T\neq0$

J. Y. Süngü, A. Türkan, E. Sertbakan, E. Veli Veliev

摘要:

利用包含5维QCD凝聚的热QCD求和规则模型,分析了轴张量介子九元态$ρ_2,~ω_2$和一个缺失成员的质量和衰变常数,以及它们的第一激发态.从$T=0$到~ $T \cong 120 ~\mathrm{MeV}$,质量和衰变常数随温度变化非常稳定。然而,接近这些阈值后,我们的数值分析表明,它们开始随着温度的升高而减小。根据相应的热QCD求和规则计算的Regge轨道模型的PDG数据和$(9-26\%)$和$(2-34\%)$,这些介子及其第一激发态的质量值在$(1-13\%)$附近比真空值和$(10-26\%)$的衰变常数减小。实验结果已经很丰富了,但预计将在正在进行的和未来的重离子实验计划中成长,使我们能够比较我们的结果。

英文摘要:

The mass and decay constant of the axial-tensor meson nonets $ρ_2,~ω_2$ and a missing member and also their first excited states are analyzed by the Thermal QCD sum rules model including QCD condensates up to dimension five. Mass and decay constant values in terms of variations of temperature are very well stable from $T=0$ up to ~$T \cong 120 ~\mathrm{MeV}$. However nearly after these threshold, our numerical analysis indicate that they begin to diminish with increasing temperature. Mass value of these mesons and their first excited states decrease about $(1-13\%)$ compared to vacuum values and $(10-26\%)$ for the decay constants according to PDG data and $(9-26\%)$ and $(2-34\%)$ respectively concerning Regge Trajectory Model in the corresponding Thermal QCD sum rules calculations. The experimental results are already copious, but expected to grow up at ongoing and future heavy-ion experimental programs allowing us to compare our results.

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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