TY - JOUR
T1 - Stable double-heavy tetraquarks
T2 - Spectrum and structure
AU - Meng, Q.
AU - Hiyama, E.
AU - Hosaka, A.
AU - Oka, M.
AU - Gubler, P.
AU - Can, K. U.
AU - Takahashi, T. T.
AU - Zong, H. S.
N1 - Funding Information:
This work is supported in part by Grants-in Aid for Scientific Research on Innovative Areas , No. 18H05407 for QM, EH, AH, and JP19H05159 for MO. KUC is supported by the Australian Research Council Grant DP190100297 . P.G. is supported by the Grant-in-Aid for Early-Carrier Scientists ( JP18K13542 ), Grant-in-Aid for Scientific Research (C) ( JP20K03940 ) and the Leading Initiative for Excellent Young Researchers (LEADER) of the Japan Society for the Promotion of Science (JSPS).
Publisher Copyright:
© 2021 The Authors
PY - 2021/3/10
Y1 - 2021/3/10
N2 - Bound states of double-heavy tetraquarks are studied in a constituent quark model. Two bound states are found for isospin and spin-parity I(JP)=0(1+) in the bbu¯d¯ channel. One is deeply bound and compact made of colored diquarks, while the other is shallow and extended as a BB⁎ molecule. The former agrees well with lattice QCD results. A systematic decrease in the binding energy is seen by replacing one of the heavy quarks to a lighter one. Altogether we find ten bound states. It is shown for the first time that hadrons with totally different natures emerge from a single Hamiltonian.
AB - Bound states of double-heavy tetraquarks are studied in a constituent quark model. Two bound states are found for isospin and spin-parity I(JP)=0(1+) in the bbu¯d¯ channel. One is deeply bound and compact made of colored diquarks, while the other is shallow and extended as a BB⁎ molecule. The former agrees well with lattice QCD results. A systematic decrease in the binding energy is seen by replacing one of the heavy quarks to a lighter one. Altogether we find ten bound states. It is shown for the first time that hadrons with totally different natures emerge from a single Hamiltonian.
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U2 - 10.1016/j.physletb.2021.136095
DO - 10.1016/j.physletb.2021.136095
M3 - Article
AN - SCOPUS:85099822087
SN - 0370-2693
VL - 814
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
M1 - 136095
ER -