Inclusion of heavy spin effects in the udb¯b¯ I(JP)=0(1−) four-quark channel in the Born-Oppenheimer approximation

  • 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.

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Author:Jakob Hoffmann, André Zimermmane-SantosORCiD, Marc WagnerORCiDGND
ArXiv Id:
Document Type:Conference Proceeding
Date of Publication (online):2022/11/28
Date of first Publication:2022/11/28
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Contributing Corporation:International Symposium on Lattice Field Theory (39. : 2022 : Bonn)
Release Date:2023/01/24
Page Number:9
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoCreative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International