Molecular ${\Omega }_b$ states

Abstract

Motivated by the recent finding of five ${\Omega }_c$ states by the LHCb collaboration, and the successful reproduction of three of them in a recent approach searching for molecular states of meson-baryon with the quantum numbers of ${\Omega }_c$, we extend these ideas and make predictions for the interaction of meson-baryon in the beauty sector, searching for poles in the scattering matrix that correspond to physical states. We find several ${\Omega }_b$ states: two states with masses 6405~MeV and 6465~MeV for $J^P={\frac{1}{2}}^{-}$; two more states with masses 6427~MeV and 6665~MeV for ${\frac{3}{2}}^{-}$; and three states between 6500 and 6820~MeV, degenerate with $J^P={\frac{1}{2}}^{-},{\frac{3}{2}}^{-}$, stemming from the interaction of vector-baryon in the beauty sector.

11 pages, 9 tables; v2: discussion added, version accepted for publication in NPB

References in corpus (5)

• Exotics: Heavy Pentaquarks and Tetraquarks
• Heavy Baryons in a Quark Model
• Spectroscopy and Regge trajectories of heavy baryons in the relativistic quark-diquark picture
• D-wave charmed and bottomed baryons from QCD sum rules
• Pentaquarks in semileptonic ${\Lambda }_b$ decays

Cited by in corpus (19)

• An updated review of the new hadron states
• Description of the ${\Xi }_c$ and ${\Xi }_b$ states as molecular states
• ${\Xi }_c$ and ${\Xi }_b$ excited states within a ${\mathrm{SU}(6)}_{\mathrm{lsf}}\times$HQSS model
• Few-body systems consisting of mesons
• $D\Xi$ and $D^{\ast }\Xi$ Molecular States from One Boson Exchange
• Doubly charmed ${\Xi }_{cc}$ molecular states from meson-baryon interaction
• Possible interpretation of the newly observed ${\Omega }_b$ states
• Observed ${\Omega }_b$ spectrum and meson-baryon molecular states
• Molecular ${\Omega }_{cc}$ , ${\Omega }_{bb}$ and ${\Omega }_{bc}$ states
• Identifying the ${\Xi }_b(6100)$ as the $P$-wave bottom baryon of $J^P=3/2^{-}$
• Possible bound states with hidden bottom from ${\bar{K}}^{(\ast )}{B}^{(\ast )}{\bar{B}}^{(\ast )}$ systems
• Hadronic Molecular States Composed of Spin-$\frac{3}{2}$ Singly Charmed Baryons
• The molecular nature of some exotic hadrons
• The bottomed strange molecules with isospin 0
• Decay widths and mass spectra of single bottom baryons
• Molecular pentaquark states with open charm and bottom flavors
• The ${\Omega }_{cc}$ resonances with negative parity in the chiral constituent quark model
• Possible molecules of triple-heavy pentaquarks within the extended local hidden gauge formalism
• Exotic ${\Omega }_c^0$ baryons from meson-baryon scattering