Investigation of BB? four-quark systems using lattice QCD

FAIRNESS 2016

Peters, Antje^1 ; Bicudo, Pedro^2 ; Cichy, Krzysztof^1,3 ; Wagner, Marc^1

Goethe-Universität Frankfurt Am Main, Institut für Theoretische Physik, Max-von-Laue-Strae 1, Frankfurt am Main

D-60438, Germany^1

CFTP, Departamento de Fíisica, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, Lisboa

1049-001, Portugal^2

Adam Mickiewicz University, Faculty of Physics, Umultowska 85, Poznan

61-614, Poland^3

关键词: Bottomonium;    Bound state;    Finite mass;    Lattice QCD;    Quantum numbers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/742/1/012006/pdf
DOI  :  10.1088/1742-6596/742/1/012006

来源: IOP

【 摘 要 】

We investigate BB systems by computing potentials of two static quarks in the presence of two quarks of finite mass using lattice QCD. By solving the Schrodinger equation we check whether these potentials are sufficiently attractive to host bound states. Particular focus is put on the experimentally most promising bottomonium-like tetraquark candidate Zb±with quantum numbers I(JP) = 1(1+).