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https://hdl.handle.net/2440/130800
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Type: | Journal article |
Title: | Stable double-heavy tetraquarks: spectrum and structure |
Author: | Meng, Q. Hiyama, E. Hosaka, A. Oka, M. Gubler, P. Can, K.U. Takahashi, T.T. Zong, H.S. |
Citation: | Physics Letters B: Nuclear Physics and Particle Physics, 2021; 814:136095-136095 |
Publisher: | Elsevier |
Issue Date: | 2021 |
ISSN: | 0370-2693 1873-2445 |
Statement of Responsibility: | Q.Meng, E.Hiyama, A.Hosaka, M.Oka, P.Gubler, K.U.Can ... et al. |
Abstract: | Bound states of double-heavy tetraquarks are studied in a constituent quark model. Two bound states are found for isospin and spin-parity in the channel. One is deeply bound and compact made of colored diquarks, while the other is shallow and extended as a ⁎ 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. |
Keywords: | Double-heavy tetraquark; quark model; few-body problem |
Rights: | © 2021 The Authors. Published by Elsevier B.V. |
DOI: | 10.1016/j.physletb.2021.136095 |
Grant ID: | http://purl.org/au-research/grants/arc/DP190100297 |
Published version: | http://dx.doi.org/10.1016/j.physletb.2021.136095 |
Appears in Collections: | Aurora harvest 8 Physics publications |
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