https://doi.org/10.1140/epjc/s10052-019-6882-5
Regular Article - Theoretical Physics
Weak decays of stable open-bottom tetraquark by SU(3) symmetry analysis
1
INPAC, Shanghai Key Laboratory for Particle Physics and Cosmology, MOE Key Laboratory for Particle Physics, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, China
2
School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China
3
Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, Lanzhou, 730000, China
4
Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing, 210023, Jiangsu, China
* e-mail: rlzhu@njnu.edu.cn
Received:
15
March
2019
Accepted:
13
April
2019
Published online:
30
April
2019
The exotic state X(5568) which was observed by D0 Collaboration is very likely to be a tetraquark state with four different valence quark flavors, though the existence was not confirmed by other collaborations. The possibility of such state still generates lots of interests in theory. In the paper, we will study the properties of the state under the SU(3) flavor symmetry. The four quark states with a heavy bottom quark and three light quarks(anti-quark) can form 
, 6 and 
representations. The weak decays can be dominant and should be discussed carefully while these states are stable against the strong and electromagnetic interactions. Therefor we will study the multi-body semileptonic and nonleptonic weak decays systematically. With the help of SU(3) flavor symmetry, we can give the Hamiltonian in the hadronic level, then obtain the parameterized irreducible amplitudes and the relations of different channels. At the end of the article, we collect some Cabibbo allowed two-body and three-body weak decay channels which can be used to reconstruct 
states at the branching fraction up to be 
.
© The Author(s), 2019
