TY  - CONF
A1  - Hoffmann, Jakob
A1  - Zimermmane-Santos, André
A1  - Wagner, Marc
T1  - Inclusion of heavy spin effects in the udb¯b¯ I(JP)=0(1−) four-quark channel in the Born-Oppenheimer approximation
N2  - We refine our previous study of a udb¯b¯ tetraquark resonance with quantum numbers I(JP)=0(1−), which is based on antiheavy-antiheavy lattice QCD potentials, by including heavy quark spin effects via the mass difference of the B and the B∗ meson. This leads to a coupled channel Schrödinger equation, where the two channels correspond to BB and B∗B∗, respectively. We search for T matrix poles in the complex energy plane, but do not find any indication for the existence of a tetraquark resonance in this refined coupled channel approach. We also vary the antiheavy-antiheavy potentials as well as the b quark mass to further understand the dynamics of this four-quark system.
Y1  - 2022
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/70560
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-705603
ER  -