Stable double-heavy tetraquarks: Spectrum and structure
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...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-03-01
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| Series: | Physics Letters B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269321000356 |
| _version_ | 1818616721655726080 |
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| author | Q. Meng E. Hiyama A. Hosaka M. Oka P. Gubler K.U. Can T.T. Takahashi H.S. Zong |
| author_facet | Q. Meng E. Hiyama A. Hosaka M. Oka P. Gubler K.U. Can T.T. Takahashi H.S. Zong |
| author_sort | Q. Meng |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-16T16:54:18Z |
| format | Article |
| id | doaj.art-212bddb6e9be4386a3bb71097e5d189f |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-16T16:54:18Z |
| publishDate | 2021-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-212bddb6e9be4386a3bb71097e5d189f2022-12-21T22:23:56ZengElsevierPhysics Letters B0370-26932021-03-01814136095Stable double-heavy tetraquarks: Spectrum and structureQ. Meng0E. Hiyama1A. Hosaka2M. Oka3P. Gubler4K.U. Can5T.T. Takahashi6H.S. Zong7Department of Physics, Nanjing University, Nanjing 210093, China; Corresponding author.Department of Physics, Kyushu University, Fukuoka 819-0395, Japan; Nishina Center for Accelerator-Based Science, RIKEN, Wako 351-0198, Japan; Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195, JapanResearch Center for Nuclear Physics (RCNP), Osaka University, Ibaraki 567-0047, Japan; Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195, JapanAdvanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan; Nishina Center for Accelerator-Based Science, RIKEN, Wako 351-0198, JapanAdvanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195, JapanCSSM, Department of Physics, The University of Adelaide, Adelaide SA 5005, Australia; Nishina Center for Accelerator-Based Science, RIKEN, Wako 351-0198, JapanNational Institute of Technology, Gunma College, Gunma 371-8530, JapanDepartment of Physics, Nanjing University, Nanjing 210093, China; Department of Physics, Anhui Normal University, Wuhu, 241000, China; Nanjing Proton Source Research and Design Center, Nanjing 210093, China; Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing, 210093, ChinaBound 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.http://www.sciencedirect.com/science/article/pii/S0370269321000356Double-heavy tetraquarkQuark modelFew-body problem |
| spellingShingle | Q. Meng E. Hiyama A. Hosaka M. Oka P. Gubler K.U. Can T.T. Takahashi H.S. Zong Stable double-heavy tetraquarks: Spectrum and structure Physics Letters B Double-heavy tetraquark Quark model Few-body problem |
| title | Stable double-heavy tetraquarks: Spectrum and structure |
| title_full | Stable double-heavy tetraquarks: Spectrum and structure |
| title_fullStr | Stable double-heavy tetraquarks: Spectrum and structure |
| title_full_unstemmed | Stable double-heavy tetraquarks: Spectrum and structure |
| title_short | Stable double-heavy tetraquarks: Spectrum and structure |
| title_sort | stable double heavy tetraquarks spectrum and structure |
| topic | Double-heavy tetraquark Quark model Few-body problem |
| url | http://www.sciencedirect.com/science/article/pii/S0370269321000356 |
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