Stable double-heavy tetraquarks: Spectrum and structure

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...

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Main Authors: Q. Meng, E. Hiyama, A. Hosaka, M. Oka, P. Gubler, K.U. Can, T.T. Takahashi, H.S. Zong
Format: Article
Language:English
Published: Elsevier 2021-03-01
Series:Physics Letters B
Subjects:
Double-heavy tetraquark
Quark model
Few-body problem
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269321000356
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spelling doaj-212bddb6e9be4386a3bb71097e5d189f2021-02-25T04:16:43ZengElsevierPhysics 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
collection DOAJ
language English
format Article
sources DOAJ
author Q. Meng
E. Hiyama
A. Hosaka
M. Oka
P. Gubler
K.U. Can
T.T. Takahashi
H.S. Zong
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
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
title Stable double-heavy tetraquarks: Spectrum and structure
title_short 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_sort stable double-heavy tetraquarks: spectrum and structure
publisher Elsevier
series Physics Letters B
issn 0370-2693
publishDate 2021-03-01
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.
topic Double-heavy tetraquark
Quark model
Few-body problem
url http://www.sciencedirect.com/science/article/pii/S0370269321000356
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AT ehiyama stabledoubleheavytetraquarksspectrumandstructure
AT ahosaka stabledoubleheavytetraquarksspectrumandstructure
AT moka stabledoubleheavytetraquarksspectrumandstructure
AT pgubler stabledoubleheavytetraquarksspectrumandstructure
AT kucan stabledoubleheavytetraquarksspectrumandstructure
AT tttakahashi stabledoubleheavytetraquarksspectrumandstructure
AT hszong stabledoubleheavytetraquarksspectrumandstructure
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