We update earlier lattice results for the binding energies of the flavor antitriplet of strong-interaction-stable doubly bottom, JP=1+ tetraquarks, employing an extended sink construction which produces significantly improved ground-state effective-mass plateaus, as well as new, larger-volume ensembles which reduce possible finite-volume effects at lighter pion masses. The updated bindings are 115(17) MeV for the I=0 member of the antitriplet and 47(8) MeV for its I=1/2 partner. We also provide an update of our earlier study of the variable heavy mass dependence of binding in the 1+ channel and new results on this dependence for binding in the 0+ channel, accessible when the two heavy quarks have unequal masses. Implications of these results of potential relevance to experimental searches for signals of the production of doubly bottom tetraquarks and/or a possible bottom-charm partner of the Tcc are also discussed. Published by the American Physical Society 2024

中文翻译：

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改进了晶格上强相互作用稳定的双底四夸克的分析


我们更新了早期的晶格结果，了解强相互作用稳定的双底 JP=1+ 四夸克的味道反三重态的结合能，采用扩展的汇结构，产生显着改进的基态有效质量平台，以及新的、更大的体积系综，以减少在较轻的 pion 质量下可能的有限体积效应。更新的结合是 115（17） MeV 对于反三元体的 I=0 成员，以及 47（8） MeV 对于其 I=1/2 伙伴。我们还提供了我们早期研究的更新，即 1+ 通道中结合的可变重质量依赖性，以及关于 0+ 通道中结合的这种依赖性的新结果，当两个重夸克的质量不相等时可以访问。还讨论了这些结果对实验搜索双底四夸克产生信号和/或 Tcc 可能的底部魅力伙伴的潜在相关性。美国物理学会 2024 年出版