Antiheavy-Antiheavy-Light-Light Four-Quark Bound States

Martin Pflaumer, Constantia Alexandrou, Jacob Finkenrath, Theodoros Leontiou, Stefan Meinel, Marc Wagner

Research output: Contribution to journalConference articlepeer-review


We present our recent results on antiheavy-antiheavy-light-light tetraquark systems using lattice QCD. Our study of the b̄b̄us four-quark system with quantum numbers JP = 1+ and the b̄c̄ud four-quark systems with I(JP) = 0(0+) and I(JP) = 0(1+) utilizes scattering operators at the sink to improve the extraction of the low-lying energy levels. We found a bound state for b̄b̄us with Ebind, b̄b̄us = (-86 ± 22 ± 10) MeV, but no indication for a bound state in both b̄c̄ud channels. Moreover, we show preliminary results for b̄b̄ud with I(JP) = 0(1+), where we used scattering operators both at the sink and the source. We found a bound state and determined its infinite-volume binding energy with a scattering analysis, resulting in Ebind, b̄b̄ud = (-103 ± 8) MeV.

Original languageEnglish (US)
Article number075
JournalProceedings of Science
StatePublished - Apr 6 2023
Event39th International Symposium on Lattice Field Theory, LATTICE 2022 - Bonn, Germany
Duration: Aug 8 2022Aug 13 2022

ASJC Scopus subject areas

  • General


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