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arXiv 1502.00429hep-ph
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由热QCD求和规则计算十重态重子质量的温度依赖性

The temperature dependence of the decuplet baryon masses from thermal QCD sum rules

Yong-Jiang Xu, Yong-Lu Liu, Ming-Qiu Huang

摘要:

本文利用热QCD求和规则研究了有限温度下十重态重子的质量。利用有限温度下的夸克传播子,计算了$T^{8}$阶谱函数,发现对$T^{8}$阶谱函数没有贡献,温度修正主要来自于包含$T^4$阶的修正.计算表明,低于$T=0.11{GeV}$的质量对温度的依赖性很小。当高于该值时,质量随着温度的升高而降低。结果表明,十重态介子的强子-夸克相变温度可能为$T_c\geq0.11{GeV}$。

英文摘要:

In the present work, the masses of the decuplet baryons at finite temperature are investigated using thermal QCD sum rules. Making use of the quark propagator at finite temperature, we calculate the spectral functions to $T^{8}$ order, and find that there are no contributions to the spectral functions at $T^{8}$ order and the temperature corrections mainly come from that containing $T^4$ ones. The calculations show very little temperature dependence of the masses below $T=0.11{GeV}$. While above that value, the masses decrease with increasing temperature. The results indicate that the hadron-quark phase transition temperature may be $T_c\geq0.11{GeV}$ for the decuplet bayons.

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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