TY  - JOUR
A1  - Pflaumer, Martin
A1  - Alexandrou, Constantia
A1  - Finkenrath, Jacob
A1  - Leontiou, Theodoros
A1  - Meinel, Stefan
A1  - Wagner, Marc
T1  - Antiheavy-antiheavy-light-light four-quark bound states
T2  - Proceedings of Science
N2  - We present our recent results on antiheavy-antiheavy-light-light tetraquark systems using lattice QCD. Our study of the b¯b¯us four-quark system with quantum numbers JP=1+ and the b¯c¯ud 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 b¯b¯us with Ebind,b¯b¯us=(−86±22±10)MeV, but no indication for a bound state in both b¯c¯ud channels. Moreover, we show preliminary results for b¯b¯ud 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,b¯b¯ud=(−103±8)MeV.
Y1  - 2023
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/84616
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-846161
SN  - 1824-8039
VL  - 430
IS  - 75
PB  - SISSA
CY  - Trieste
ER  -