Prediction of Double-heavy Tetraquarks Bound States in Quark Model
Prediction of Double-heavy Tetraquarks Bound States in Quark Model
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DOI：
10.1007/s00601-021-01665-6
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发表时间：
2021-08
期刊：
影响因子：
1.6
通讯作者：
Qi Meng;E. Hiyama;A. Hosaka;M. Oka;Philipp Gubler;K. U. Can;Toru T. Takahashi;H. Zong
中科院分区：
文献类型：
--
作者：
Qi Meng;E. Hiyama;A. Hosaka;M. Oka;Philipp Gubler;K. U. Can;Toru T. Takahashi;H. Zong
We present four-body calculations of double-heavy tetraquarks in quark model. Several bound states are found for various flavor combinations. One of them is a strongly boundwith isospin and spin-parity, having a binding energy of almost 200 MeV. This is consistent with the predictions of lattice QCD. We have also found a shallow state for the samechannel. By computing density distributions, it is shown that the deep one is a compact tetraquark state, while the shallow one is regarded as a loosely-bound molecule of two color singlet mesons,Band. This is a hadronic analogue of the cluster formation in light nuclei, the first example that hadrons with totally different nature emerge from a single Hamiltonian.
