Strong decays of the newly observed narrow ${\Omega }_b$ structures

Abstract

Motivated by the newly observed narrow structures ${\Omega }_b(6316{)}^{-}$, ${\Omega }_b(6330{)}^{-}$, ${\Omega }_b(6340{)}^{-}$, and ${\Omega }_b(6350{)}^{-}$ in the ${\Xi }_b^0{K}^{-}$ mass spectrum, we investigate the strong decays of the low-lying ${\Omega }_b$ states within the ${}^3{P}_0$ model systematically. According to their masses and decay widths, the observed ${\Omega }_b(6316{)}^{-}$, ${\Omega }_b(6330{)}^{-}$, ${\Omega }_b(6340{)}^{-}$, and ${\Omega }_b(6350{)}^{-}$ resonances can be reasonably assigned as the $\lambda -$mode ${\Omega }_b(1P)$ states with $J^P=1/2^{-},3/2^{-},3/2^{-}$, and $5/2^{-}$. Meanwhile, the remaining $P-$wave state with $J^P=1/2^{-}$ should have a rather broad width, which can hardly be observed by experiments. For the ${\Omega }_b(2S)$ and ${\Omega }_b(1D)$ states, our predictions show that these states have relatively narrow total widths and mainly decay into the ${\Xi }_b\bar{K}$, ${\Xi }_b^{\prime }\bar{K}$ and ${\Xi }_b^{\prime \ast }\bar{K}$ final states. These abundant theoretical predictions may be valuable for searching more excited ${\Omega }_b$ states in future experiments.

arXiv comment7 pages,4 figures,and 4 tables. Simplify the formalism of the model. Minor modifications. arXiv admin note: text overlap with arXiv:1910.06126 and arXiv:1908.00223

References in corpus (53)

• Heavy Baryons in a Quark Model
• A review of the open charm and open bottom systems
• Baryon spectroscopy
• Spectroscopy and Regge trajectories of heavy baryons in the relativistic quark-diquark picture
• On the Mechanism of Open-Flavor Strong Decays
• Higher Quarkonia
• Progress Toward Understanding Baryon Resonances
• Spectrum of heavy baryons in the quark model
• Masses of excited heavy baryons in the relativistic quark-diquark picture
• Strong Decays of Strange Quarkonia
• Properties of Excited Charm and Charm-Strange Mesons
• Faddeev study of heavy baryon spectroscopy
• Strong decays of charmed baryons
• Strong and radiative decays of the low-lying $S$- and $P$-wave singly heavy baryons
• Charmed baryon strong decays in a chiral quark model
• Quantum Numbers of Recently Discovered ${\Omega }_c^0$ Baryons from Lattice QCD
• Very narrow excited ${\Omega }_c$ baryons
• Spectrum of light- and heavy-baryons
• Decay properties of $P$-wave charmed baryons from light-cone QCD sum rules
• Low-lying charmed and charmed-strange baryon states
• Quark structure of the $X(3872)$ and ${\chi }_b(3P)$ resonances
• Understanding the newly observed ${\Omega }_c$ states through their decays
• Excited bottom and bottom-strange mesons in the quark model
• Scaling of the 3P0 strength in heavy meson strong decays
• Excited State Mass spectra and Regge trajectories of Bottom Baryons
• Interpretation of the newly observed ${\Omega }_c^0$ resonances
• Quantum Numbers of ${\Omega }_c$ States and Other Charmed Baryons
• Analysis of the ${\Omega }_c(3000)$, ${\Omega }_c(3050)$, ${\Omega }_c(3066)$, ${\Omega }_c(3090)$ and ${\Omega }_c(3119)$ with QCD sum rules
• Molecular ${\Omega }_c$ states generated from coupled meson-baryon channels
• New ${\Omega }_c^0$ baryons discovered by LHCb as the members of $1P$ and $2S$ states
• Interpretation of the new ${\Omega }_c^0$ states via their mass and width
• Possibility of the existence of charmed exotica
• Strong and radiative decays of the low-lying $D$-wave singly heavy baryons
• Hadronic decay properties of newly observed ${\Omega }_c$ baryons
• A meson-baryon molecular interpretation for some ${\Omega }_c$ excited baryons
• Interpretation of the newly observed ${\Sigma }_b(6097{)}^{\pm }$ and ${\Xi }_b(6227{)}^{-}$ states as the $P$-wave bottom baryons
• The observed ${\Omega }_c^0$ resonances as pentaquark states
• Understanding the charmed states recently observed by the LHCb and BaBar Collaborations in the quark model
• Assigning the newly reported ${\Sigma }_b(6097)$ as a $P$-wave excited state and predicting its partners
• Investigating the excited ${\Omega }_c^0$ states through ${\Xi }_{c}K$ and ${\Xi }_c^{{}^{\prime }}K$ decay channels
• Strong and radiative decays of DΞmolecular state and newly observed ${\Omega }_c$ states
• Strong decay of ${\Lambda }_c(2940)$ as a $2P$ state in the ${\Lambda }_c$ family
• Strong decays of the higher excited ${\Lambda }_Q$ and ${\Sigma }_Q$ baryons
• Interpretation of the observed ${\Lambda }_b(6146{)}^0$ and ${\Lambda }_b(6152{)}^0$ states as 1$D$ bottom baryons
• Strong Decays of observed ${\Lambda }_c$ Baryons in the ${}^3{P}_0$ Model
• Nature of charmed strange baryons ${\Xi }_c(3055)$ and ${\Xi }_c(3080)$
• Canonical interpretation of the newly observed ${\Lambda }_b(6146{)}^0$ and ${\Lambda }_b(6152{)}^0$ via strong decay behaviors
• Study of $2S$- and $1D$- excitations of observed charmed strange baryons
• Possible pentaquark candidates: new excited ${\Omega }_c$ states
• Possible open-charmed pentaquark molecule ${\Omega }_c(3188)$ --- the $D\Xi$ bound state --- in the Bethe-Salpeter formalism
• Revisit assignments of the new excited ${\Omega }_c$ states with QCD sum rules
• Dipion decays of heavy baryons
• ${\mathbf{\Omega }}_{\mathbf{b}}^{-}\to ({\mathbf{\Xi }}_{\mathbf{c}}^{+}{\mathbf{K}}^{-}){\mathbf{\pi }}^{-}$ and the ${\mathbf{\Omega }}_{\mathbf{c}}$ states

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• An updated review of the new hadron states
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Canonical interpretations of the newly observed ${\Xi }_c(2923{)}^0$, ${\Xi }_c(2939{)}^0$ and ${\Xi }_c(2965{)}^0$ resonances
• Strong decays of the low-lying bottom strange baryons
• Observed ${\Omega }_b$ spectrum and meson-baryon molecular states
• Identifying the ${\Xi }_c^0$ baryons observed by LHCb as $P$-wave ${\Xi }_c^{\prime }$ baryons
• Interpretation of excited ${\Omega }_b$ signals
• Strong decay properties of single heavy baryons ${\Lambda }_Q$, ${\Sigma }_Q$ and ${\Omega }_Q$
• The newly observed ${\Lambda }_b(6072{)}^0$ structure and its $\rho -$mode nonstrange partners
• Decay widths and mass spectra of single bottom baryons
• Identifying the ${\Lambda }_b(6146{)}^0$ and ${\Lambda }_b(6152{)}^0$ as $D$-wave bottom baryons
• Strong decays of the low-lying doubly bottom baryons
• Toward establishing the low-lying $P$-wave excited ${\Sigma }_c$ baryon states
• Strong decays of the low-lying $1P$- and $1D$-wave ${\Sigma }_c$ baryons
• Light meson emissions of the selected charmonium-like states within compact tetraquark configurations
• Spectroscopic properties of $1F$-wave singly bottom baryons
• Analysis of the ${\Omega }_b(6316)$, ${\Omega }_b(6330)$, ${\Omega }_b(6340)$ and ${\Omega }_b(6350)$ with QCD sum rules