In this work we investigate the existence of bound states for doubly heavy tetraquark systems Q-Q- 'qq' in a full lattice-QCD computation, where heavy bottom quarks are treated in the framework of non-relativistic QCD. We focus on three systems with quark content b-b-ud, b-b-us and b-c-ud. We show evidence for the existence of b-b-ud and b-b-ud bound states, while no binding appears to be present for b-c-ud. For the bound four-quark states we also discuss the importance of various creation operators and give an estimate of the meson-meson and diquark-antidiquark percentages.
|Original language||English (US)|
|Journal||Proceedings of Science|
|State||Published - Jul 8 2022|
|Event||38th International Symposium on Lattice Field Theory, LATTICE 2021 - Virtual, Online, United States|
Duration: Jul 26 2021 → Jul 30 2021
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