New insight into the exotic states strongly coupled with the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si87.svg"><mml:mrow><mml:mi>D</mml:mi><mml:msup><mml:mrow><mml:mover accent="true"><mml:mrow><mml:mi>D</mml:mi></mml:mrow><mml:mrow><mml:mo stretchy="true">‾</mml:mo></mml:mrow></mml:mover></mml:mrow><mml:mrow><mml:mo>∗</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> from the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si88.svg"><mml:mrow><mml:msubsup><mml:

Wang, Guang-Juan; Yang, Zhi; Wu, Jia-Jun; Oka, Makoto; Zhu, Shi-Lin

doi:10.1016/j.scib.2024.07.012

Science Bulletin

2024

DOI: 10.1016/j.scib.2024.07.012

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New insight into the exotic states strongly coupled with the DD‾∗ from the

Guang-Juan Wang,

Zhi Yang,

Jia-Jun Wu

et al.

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Cited by 3 publications

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Three ways to decipher the nature of exotic hadrons: Multiplets, three-body hadronic molecules, and correlation functions

Liu,

Pan,

Liu

et al. 2025

Physics Reports

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Three ways to decipher the nature of exotic hadrons: Multiplets, three-body hadronic molecules, and correlation functions

Liu,

Pan,

Liu

et al. 2025

Physics Reports

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Doubly heavy tetraquark bound and resonant states

Wu,

Ma,

Chen

et al. 2024

Phys. Rev. D

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We calculate the energy spectrum of the S-wave doubly heavy tetraquark systems, including the QQ(′)q¯q¯, QQ(′)s¯q¯, and QQ(′)s¯s¯ (Q(′)=b, c and q=u, d) systems within the constituent quark model. We use the complex scaling method to obtain bound states and resonant states simultaneously, and the Gaussian expansion method to solve the complex-scaled four-body Schrödinger equation. With a novel definition of the root-mean-square radii, we are able to distinguish between meson molecules and compact tetraquark states. The compact tetraquarks are further classified into three different types with distinct spatial configurations: compact even tetraquarks, compact diquark-antidiquark tetraquarks, and compact diquark-centered tetraquarks. In the I(JP)=0(1+) QQq¯q¯ system, there exists the D*D molecular bound state with a binding energy of −14 MeV, which is the candidate for Tcc(3875)+. The shallow B¯*B¯ molecular bound state is the bottom analog of Tcc(3875)+. Moreover, we identify two resonant states near the D*D* and B¯*B¯* thresholds. In the JP=1+ bbq¯q¯(I=0) and bbs¯q¯ systems, we obtain deeply bound states with a compact diquark-centered tetraquark configuration and a dominant χ3¯c⊗3c component, along with resonant states with similar configurations as their radial excitations. These states are the QCD analog of the helium atom. We also obtain some other bound states and resonant states with “QCD hydrogen molecule” configurations. Moreover, we investigate the heavy quark mass dependence of the I(JP)=0(1+) QQq¯q¯ bound states. We strongly urge the experimental search for the predicted states. Published by the American Physical Society 2024

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Three-coupled-channel analysis of Zc(3900) involving DD¯*
Yu,
Wang,
Wu
et al. 2024
Phys. Rev. D
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In this work, we conduct a three-coupled-channel analysis of the Zc(3900) structure, focusing on the DD¯*, J/ψπ, and ρηc channels, based on the one-boson exchange model. Drawing from previous study on the exotic state Tcc, we only utilize one more parameter to construct the interactions between the channels. Our model successfully reproduces the experimental line shapes of the invariant mass distribution at s=4.23 and 4.26 GeV for the three channels. Additionally, the finite-volume energy levels in our model show agreement with current lattice QCD conclusion. Detailed analysis suggests that the Zc(3900) peaks in the πJ/ψ and ρηc distributions primarily arise from the triangle loop involving the D1D¯D* intermediate system. In the DD¯* distribution, the threshold peak is generated by the cascade decay mechanism enhanced by a triangle diagram. Moreover, we find a virtual pole located far from the threshold, indicating that Zc(3900) peaks are not associated with a physical pole. We conclude that the Zc(3900) peaks are predominantly caused by the threshold cusp. Published by the American Physical Society 2024

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New insight into the exotic states strongly coupled with the DD‾∗ from the

Cited by 3 publications

References 72 publications

Three ways to decipher the nature of exotic hadrons: Multiplets, three-body hadronic molecules, and correlation functions

Three ways to decipher the nature of exotic hadrons: Multiplets, three-body hadronic molecules, and correlation functions

Doubly heavy tetraquark bound and resonant states

Three-coupled-channel analysis of Zc(3900) involving DD¯*
Yu,
Wang,
Wu
et al. 2024
Phys. Rev. D
0
0
0
0
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New insight into the exotic states strongly coupled with the DD‾∗ from the

Cited by 3 publications

References 72 publications

Three ways to decipher the nature of exotic hadrons: Multiplets, three-body hadronic molecules, and correlation functions

Three ways to decipher the nature of exotic hadrons: Multiplets, three-body hadronic molecules, and correlation functions

Doubly heavy tetraquark bound and resonant states

Three-coupled-channel analysis of Zc(3900) involving DD¯*Yu, Wang, Wu et al. 2024Phys. Rev. D0000View full textAdd to dashboardCite

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Three-coupled-channel analysis of Zc(3900) involving DD¯*
Yu,
Wang,
Wu
et al. 2024
Phys. Rev. D
0
0
0
0
View full text Add to dashboard Cite