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夸克-双夸克模型中\(Ω_{ccb}\)和\(Ω_{bbc}\)重子的性质

Properties of $Ω_{ccb}$ and $Ω_{bbc}$ baryons in a quark-diquark model

Chaitanya Anil Bokade, Bhaghyesh

arXiv 2607.23072首次发表:更新:

AI 中文总结

研究利用夸克-双夸克近似在相对论屏蔽势模型中探究\(Ω_{ccb}\)和\(Ω_{bbc}\)重子的质谱与辐射跃迁,给出质量预测并与其他方法比较,揭示激发能量特点及辐射衰变规律,凸显模型对相关研究和实验结果解释的价值。

AI 中文摘要

在这项工作中,我们在相对论屏蔽势模型内,使用夸克-双夸克近似来研究\(Ω_{ccb}\)和\(Ω_{bbc}\)重子的质谱和辐射跃迁,以捕捉其内部结构的关键方面。该模型描述了\(S\)、\(P\)和\(D\)波激发,给出了相应的质量预测,并与其他理论方法进行了比较。我们的发现表明,涉及双夸克的激发发生在比夸克和双夸克之间相对运动所需能量更低的能量处,挑战了关于重双夸克系统刚性的传统假设。对这些态的辐射衰变分析表明,同一轨道多重态内的自旋翻转跃迁受到抑制,而涉及轨道或径向变化的跃迁占主导,宽度明显更大。该模型在激发动力学方面提供了细微差别,并突出了其对未来研究以及解释即将到来的关于三重重子的实验结果的价值。

英文摘要

In this work, we investigate the mass spectra and radiative transitions of $Ω_{ccb}$ and $Ω_{bbc}$ baryons within a relativistic screened potential model using the quark-diquark approximation to capture key aspects of their internal structure. The model describes the $S$-, $P$-, and $D$-wave excitations, provides corresponding mass predictions, and offers a comparison with other theoretical approaches. Our findings suggest that excitations involving the diquark occur at lower energies than those requiring relative motion between the quark and diquark, challenging conventional assumptions about the rigidity of heavy diquark systems. Analysis of radiative decays of these states, shows that spin-flip transitions within the same orbital multiplet are suppressed, while transitions involving orbital or radial changes dominate with significantly larger widths. The model offers subtle distinctions in excitation dynamics and highlights its value for future studies and for interpreting potentially upcoming experimental results on triply heavy baryons.

Comments21 pages

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