Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-11-11
Phys.Rev.D73:014018,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
Scientific paper
10.1103/PhysRevD.73.014018
Using the color-magnetic interaction Hamiltonian with SU(3) flavor symmetry breaking, we perform a schematic study of the masses of the $J^P=1^+$ tetraquarks in the anti-decuplet representation. After diagonalizing the mass matrix, we find the $ud\bar s\bar s$ tetraquark lies around 1347 MeV. It decays into $K^+K^0\pi^0, K^+K^+\pi^-, K^0K^0\pi^+$ via P-wave. The dual suppression from the not-so-big three-body phase space and P-wave decay barrier may render this exotic state rather narrow. Future experimental exclusion of this state will cast doubt on the validity of applying the simple color-magnetic Hamiltonian to the multiquark system.
Chen Xiao-Lin
Cui Ying
Deng Wei-Zhen
Zhu Shi-Lin
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