A survey of heavy-heavy hadronic molecules

Abstract

The spectrum of hadronic molecules composed of heavy-antiheavy charmed hadrons has been obtained in our previous work. The potentials are constants at the leading order, which are estimated from resonance saturation. The experimental candidates of hadronic molecules, say $X(3872)$, $Y(4260)$, three $P_c$ states and $P_{cs}(4459)$, fit the spectrum well. The success in describing the pattern of heavy-antiheavy hadronic molecules stimulates us to give more predictions for the heavy-heavy cases, which are less discussed in literature than the heavy-antiheavy ones. Given that the heavy-antiheavy hadronic molecules, several of which have strong experimental evidence, emerge from the dominant constant interaction from resonance saturation, we find that the existence of many heavy-heavy hadronic molecules is natural. Among these predicted heavy-heavy states we highlight the $D{D}^{\ast }$ molecule and the $D^{(\ast )}{\Sigma }_c^{(\ast )}$ molecules, which are the partners of the famous $X(3872)$ and $P_c$ states. Quite recently, LHCb collaboration reported a doubly charmed tetraquark state, $T_{cc}$, which is in line with our results for the $D{D}^{\ast }$ molecule. With the first experimental signal of this new kind of exotic states, the upcoming 3pdate of the LHCb experiment as well as other experiments will provide more chances of observing the heavy-heavy hadronic molecules.

v3: the published version, mistakes about the quantum numbers of identical di-baryon system corrected and 122 double-charm hadronic molecules; v2: more discussion added and references updated; v1: 20 pages, 6 figures and 124 double-charm hadronic molecules including the recently discovered T_{cc} in LHCb measurement

References in corpus (51)

• Multiquark Resonances
• Pentaquark and Tetraquark states
• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$
• Exotics: Heavy Pentaquarks and Tetraquarks
• Observation of the doubly charmed baryon ${\Xi }_{cc}^{++}$
• Prediction of narrow $N^{\ast }$ and ${\Lambda }^{\ast }$ resonances with hidden charm above 4 GeV
• Dynamically Generated Open and Hidden Charm Meson Systems
• Discovery of doubly-charmed Xi_{cc} baryon implies a stable (b b ubar dbar) tetraquark
• Heavy-quark symmetry implies stable heavy tetraquark mesons $Q_i{Q}_j{\bar{q}}_k{\bar{q}}_l$
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• The Heavy Quark Spin Symmetry Partners of the X(3872)
• Masses of tetraquarks with two heavy quarks in the relativistic quark model
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• Explaining the Many Threshold Structures in the Heavy-Quark Hadron Spectrum
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• Exotic tetraquark states with the $qq\bar{Q}\bar{Q}$ configuration
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• Exotic meson-meson molecules and compact four--quark states
• Stable multiquark states with heavy quarks in a diquark model
• Heavy tetraquarks in the relativistic quark model
• Probing the long-range structure of the $T_{cc}^{+}$ with the strong and electromagnetic decays
• Doubly-heavy tetraquarks
• Possible S-wave Bound-States of Two Pseudoscalar Mesons
• Including heavy spin effects in the prediction of a $\bar{b}\bar{b}ud$ tetraquark with lattice QCD potentials
• Masses of doubly heavy tetraquarks $T_{Q{Q}^{\prime }}$ in a relativized quark model
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• Stability of tetrons
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• Hadronic Molecular States Composed of Heavy Flavor Baryons
• Heavy molecules and one-$\sigma /\omega$-exchange model
• More kaonic bound states and a comprehensive interpretation of the D_{sJ} states
• Production of doubly charmed tetraquarks with exotic color configurations in electron-positron collisions
• Four-quark Bound States in Chiral SU(3) Quark Model
• Prediction of exotic doubly charmed baryons within chiral effective field theory
• ${\bar{B}}^{(\ast )}{\bar{B}}^{(\ast )}$ interactions in chiral effective field theory
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• Perfect $D{D}^{\ast }$ molecular prediction matching the $T_{cc}$ observation at LHCb
• Hidden Charm Pentaquark $P_c(4380)$ and Doubly Charmed Baryon ${\Xi }_{cc}^{\ast }(4380)$ as Hadronic Molecule States
• Exotic $bc\bar{q}\bar{q}$ four-quark states
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• Search for doubly-heavy dibaryons in a quark model
• Doubly charmed multibaryon systems
• $D^0{D}^0{\pi }^{+}$ mass distribution in the production of the $T_{cc}$ exotic state
• Spectroscopy and production of doubly charmed tetraquarks

Cited by in corpus (17)

• New strange pentaquarks
• Doubly charmed molecular pentaquarks
• Analysis of the $X(3960)$ and related tetraquark molecular states via the QCD sum rules
• Heavy flavor molecular states with strangeness
• Masses and widths of the exotic molecular $B_{(s)}^{(\ast )}{B}_{(s)}^{(\ast )}$ states
• The quasi-fission phenomeonon of double charm $T_{cc}^{+}$ induced by nucleon
• Investigation of the possible $D{\bar{D}}^{\ast }$/$B{\bar{B}}^{\ast }$ and $D{D}^{\ast }$/$\bar{B}{\bar{B}}^{\ast }$ molecule states
• Magnetic moments of the doubly charged axial-vector $T_{cc}^{++}$ states
• Exploring the magnetic dipole moments of $T_{QQ\bar{q}\bar{s}}$ and $T_{QQ\bar{s}\bar{s}}$ states in the framework of QCD light-cone sum rules
• New type of doubly charmed molecular pentaquarks containing most strange quarks: Mass spectra, radiative decays, and magnetic moments
• $\sigma$ exchange in the one-boson exchange model involving the ground state octet baryons
• Spectrum of the molecular hexaquarks
• hidden charm decays of $X(4014)$ in a $D^{\ast }{\bar{D}}^{\ast }$ molecule scenario
• Predictions of super-exotic heavy mesons from $K^{\ast }{B}^{\ast }{B}^{\ast }$ interactions
• $J/\psi$ decay to $\varphi ,\omega ,K^{\ast 0}$ plus $f_0(1370)$, $f_0(1710)$, $K_0^{\ast }(1430)$, $f_2(1270)$, $f_2^{\prime }(1525)$ and $K_2^{\ast }(1430)$: role of the $D$-wave for tensor production
• Hints of the $J^{PC}=0^{--}$ and $1^{--}$ $K^{\ast }{\bar{K}}_1(1270)$ Molecules in the $J/\psi \to \varphi \eta {\eta }^{\prime }$ Decay
• Possible ${\Sigma }_c^{\ast }\bar{\Sigma }$ molecular states