A New Look at the $Y$ Tetraquarks and ${\Omega }_c$ Baryons in the Diquark Model

Abstract

We analyze the hidden charm $P$-wave tetraquarks in the diquark model, using an effective Hamiltonian incorporating the dominant spin-spin, spin-orbit and tensor interactions. We compare with other $P$-wave system such as $P$-wave charmonia and the newly discovered ${\Omega }_c$ baryons, analysed recently in this framework. Given the uncertain experimental situation on the $Y$ states, we allow for different spectra and discuss the related parameters in the diquark model. In addition to the presently observed ones, we expect many more states in the supermultiplet of $L=1$ diquarkonia, whose $J^{PC}$ quantum numbers and masses are worked out, using the parameters from the currently preferred $Y$-states pattern. The existence of these new resonances would be a decisive footprint of the underlying diquark dynamics.

Revised and extended to accommodate referee comments. Added a table and references. Accepted for publication in the EPJC

References in corpus (7)

• Multiquark Resonances
• Exotics: Heavy Pentaquarks and Tetraquarks
• Spectroscopy and Regge trajectories of heavy baryons in the relativistic quark-diquark picture
• The Z(4430) and a New Paradigm for Spin Interactions in Tetraquarks
• Precise measurement of the $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}J/\psi$ cross section at center-of-mass energies from 3.77 to 4.60 GeV
• Evidence of Two Resonant Structures in $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{h}_c$
• $QQ\bar{Q}\bar{Q}$ states: masses, production, and decays

Cited by in corpus (37)

• The $XYZ$ states: experimental and theoretical status and perspectives
• Pentaquark and Tetraquark states
• An updated review of the new hadron states
• Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
• Interpretation of the Narrow $J/\psi p$ Peaks in ${\Lambda }_b\to J/\psi p{K}^{-}$ Decay in the Compact Diquark Model
• Analysis of the $P_{cs}(4459)$ as the hidden-charm pentaquark state with QCD sum rules
• Hidden charm tetraquark states in a diquark model
• Spectrum of the Hidden-Bottom and the Hidden-Charm/Strange Exotics in the Dynamical Diquark Model
• Study of the process $e^{+}{e}^{-}\to {\pi }^0{\pi }^{0}J/\psi$ and neutral charmonium-like state $Z_c(3900{)}^0$
• The BESIII Physics Programme
• Mass spectrum of the hidden-charm pentaquarks in the compact diquark model
• Observation of excited ${\Omega }_c^0$ baryons in ${\Omega }_b^{-}\to {\Xi }_c^{+}{K}^{-}{\pi }^{-}$ decays
• Tetraquarks in large-$N_c$ QCD
• Lowest vector tetraquark states: $Y(4260/4220)$ or $Z_c(4100)$
• Vector tetraquark state candidates: $Y(4260/4220)$, $Y(4360/4320)$, $Y(4390)$ and $Y(4660/4630)$
• The Hydrogen Bond of QCD
• Nature of the $Y(4260)$: A light-quark perspective
• Analysis of the vector tetraquark states with P-waves between the diquarks and antidiquarks via the QCD sum rules
• Prediction of an exotic state around 4240 MeV with $J^{PC}=1^{-+}$ as C-parity partner of Y(4260) in molecular picture
• Going in quest of potential tetraquark interpretations for the newly observed $T_{\psi \psi }$ states in light of the diquark-antidiquark scenarios
• Settling the $Z_c(4600)$ in the charged charmonium-like family
• The newly observed ${\Omega }_c(3327)$: A good candidate for a $D$-wave charmed baryon
• Refining radiative decay studies in singly heavy baryons
• ${\mathbf{\Omega }}_{\mathbf{b}}^{-}\to ({\mathbf{\Xi }}_{\mathbf{c}}^{+}{\mathbf{K}}^{-}){\mathbf{\pi }}^{-}$ and the ${\mathbf{\Omega }}_{\mathbf{c}}$ states
• The interplay between compact and molecular structures in tetraquarks
• Coupled-Channel-Induced $S-D$ mixing of Charmonia and Testing Possible Assignments for $Y(4260)$ and $Y(4360)$
• Analysis of the vector hidden-charm-hidden-strange tetraquark states with implicit P-waves
• On the origin of the $Y(4260)$
• Radiative Transitions of Charmoniumlike Exotics in the Dynamical Diquark Model
• Hunting for the prospective $T_{cc}$ family based on the diquark-antidiquark configuration
• Masses of tetraquark states in the hidden charm sector above $D-D^{\ast }$ threshold
• Observation of Three Resonant Structures in the Cross Section of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{h}_c$
• Three-body strong decays of the $Y(4230)$ via the light-cone QCD sum rules
• Ballistic Lévy walk with rests: Escape from a bounded domain
• Study of the $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}\omega$ process at center-of-mass energies between 4.0 and 4.6 GeV
• Hadronic molecules and multiquark states
• Analysis of the vector hidden-charm tetraquark states without explicit P-waves via the QCD sum rules