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Quark-diquark string tension, excited baryonic resonances and thermal fluctuations
Physica Scripta ( IF 2.9 ) Pub Date : 2020-05-27 , DOI: 10.1088/1402-4896/ab8d01
E Megías , E Ruiz Arriola , L L Salcedo

We study the baryonic fluctuations from second to eighth order involving electric charge, baryon number and strangeness below the quark-gluon plasma crossover and numerically known from lattice QCD calculations. By considering a particular realization of the Hadron Resonance Gas model, we provide evidence on the dominant role of quark-diquark degrees of freedom to describe excited baryonic resonances. After proving by means of suitable Polyakov loop correlators that the quark-diquark and the quark-antiquark forces coincide, $V_{\bar q q } (r) = V_{\bar q D } (r) + \textrm{const}$, we find that the corresponding susceptibilities can be saturated with excited baryonic states in a quark-diquark model picture.

中文翻译:

Quark-diquark 弦张力、激发的重子共振和热涨落

我们研究了从二阶到八阶的重子涨落,涉及电荷、重子数和夸克-胶子等离子体交叉下方的奇异性,并通过晶格 QCD 计算在数值上已知。通过考虑强子共振气体模型的特定实现,我们提供了夸克-二夸克自由度在描述激发重子共振方面的主导作用的证据。通过合适的波利亚科夫环相关器证明夸克-二夸克和夸克-反夸克力重合后,$V_{\bar qq } (r) = V_{\bar q D } (r) + \textrm{const}$ ,我们发现在夸克-迪夸克模型图片中,相应的磁化率可以被激发的重子态饱和。
更新日期:2020-05-27
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