文章基本信息

标题：Including heavy spin effects in a lattice QCD study of static-static-light-light tetraquarks
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作者：P.Bicudo ; J.Scheunert ; M.Wagner 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2016
卷号：256
DOI：10.22323/1.256.0103
语种：English
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：In previous works we predicted the existence of a $\bar b \bar b u d$ tetraquark with quantum numbers $I(J^P) = 0(1^+)$ using the static approximation for the $\bar b$ quarks and neglecting heavy spin effects. Since the binding energy is of the same order as expected for these heavy spin effects, it is essential to include them in the computation. Here we present a corresponding method and show evidence that binding is only slightly weakened and that the $\bar b \bar b u d$ tetraquark persists.