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arXiv 2402.03802hep-phhep-exhep-lat
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通过电磁形状因子阐明自旋-$\ rac{3}{2}$隐粲五夸克态的性质

Elucidating the nature of hidden-charm pentaquark states with spin-$\frac{3}{2}$ through their electromagnetic form factors

U. Özdem

AI总结:

本文利用QCD光锥求和规则和不同插值流计算自旋3/2隐粲五夸克态的电磁多极矩,发现相同夸克内容可对应多个电磁性质不同的五夸克态,为理解其内部结构提供了新线索。

摘要:

我们对奇特态的电磁性质进行了系统研究,以阐明其仍然存在争议且尚未被完全理解的性质。强子态的磁偶极矩和高阶多极矩是与其质量同等基本的动力学量,它们包含有关其深层结构的重要信息。在本工作中,我们利用QCD光锥求和规则方法和不同的插值流,探索了具有量子数$J^P = 3/2^-$的隐粲五夸克态的磁偶极矩和高阶多极矩。所得结果表明,采用不同的插值流来探测具有相同夸克内容的五夸克态,会产生完全不同的磁偶极矩和高阶多极矩结果。这可以解释为存在不止一种具有相同夸克内容但磁偶极矩和高阶多极矩不同的隐粲五夸克态。通过研究这些态的电磁性质,可以更好地理解它们的性质、内部结构以及夸克-胶子组态。

英文摘要:

We perform a systematic study of the electromagnetic properties of exotic states to shed light on their nature, which is still controversial and not fully understood. The magnetic dipole and higher multipole moments of a hadronic state are as fundamental a dynamical quantity as its mass, and they contain valuable information about the deep structure underlying it. In the present work, we have explored the magnetic dipole and higher multipole moments of the hidden-charm pentaquarks with quantum number $J^P = 3/2^-$ using the QCD light-cone sum rule method and different interpolating currents. The obtained results show that different interpolating currents employed to probe pentaquarks with the same quark content produce varying results for their magnetic dipole and higher multipole moments at all. This can be interpreted to mean that there is more than one hidden-charm pentaquark with identical quark content but with different magnetic dipole and higher multipole moments. The nature, internal structure, and quark-gluon configurations of these states can be better understood by studying their electromagnetic properties.

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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