双重四夸克结合的夸克质量依赖性

arXiv - PHYS - High Energy Physics - Phenomenology Pub Date : 2024-09-17 DOI:arxiv-2409.11477

W. G. Parrott, B. Colquhoun, A. Francis, R. J. Hudspith, R. Lewis, K. Maltman

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引用次数: 0

摘要

最近在大型强子对撞机（LHCb）上发现的双粲四夸克（T_{cc}$）证实了束缚双重四夸克态的存在，它低于主题子对阈值不到1 MeV。其他有两个重夸克（底夸克或粲夸克）的态也可能被束缚，也许束缚得更深。在这里，我们将讨论我们以前的工作，以及我们目前对各种重-重-轻-轻四夸克候选态的最新分析的改进，包括结合的轻夸克和重夸克质量依赖性。

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Quark mass dependence of doubly heavy tetraquark binding

The existence of bound doubly heavy tetraquark states was confirmed by the recent LHCb discovery of the doubly charmed $T_{cc}$, less than 1 MeV below the meson pair threshold. Others states with two heavy (bottom or charm) quarks could also be bound, perhaps more deeply. Here we discuss our previous work, and the improvements in our current, updated analysis of various heavy-heavy-light-light tetraquark candidates, including the light and heavy quark mass dependence of the binding.

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arXiv - PHYS - High Energy Physics - Phenomenology

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