Charm-strange baryon strong decays in a chiral quark model

Abstract

The strong decays of charm-strange baryons up to N=2 shell are studied in a chiral quark model. The theoretical predictions for the well determined charm-strange baryons, ${\Xi }_c^{\ast }(2645)$, ${\Xi }_c(2790)$ and ${\Xi }_c(2815)$, are in good agreement with the experimental data. This model is also extended to analyze the strong decays of the other newly observed charm-strange baryons ${\Xi }_c(2930)$, ${\Xi }_c(2980)$, ${\Xi }_c(3055)$, ${\Xi }_c(3080)$ and ${\Xi }_c(3123)$. Our predictions are given as follows. (i) ${\Xi }_c(2930)$ might be the first $P$-wave excitation of ${\Xi }_c^{\prime }$ with $J^P=1/2^{-}$, favors the $|{\Xi }_c^{\prime }{}^2{P}_{\lambda }1/2^{-}>$ or $|{\Xi }_c^{\prime }{}^4{P}_{\lambda }1/2^{-}>$ state. (ii) ${\Xi }_c(2980)$ might correspond to two overlapping $P$-wave states $|{\Xi }_c^{\prime }{}^2{P}_{\rho }1/2^{-}>$ and $|{\Xi }_c^{\prime }{}^2{P}_{\rho }3/2^{-}>$, respectively. The ${\Xi }_c(2980)$ observed in the ${\Lambda }_c^{+}\bar{K}\pi$ final state is most likely to be the $|{\Xi }_c^{\prime }{}^2{P}_{\rho }1/2^{-}>$ state, while the narrower resonance with a mass $m\simeq 2.97$ GeV observed in the ${\Xi }_c^{\ast }(2645)\pi$ channel favors to be assigned to the $|{\Xi }_c^{\prime }{}^2{P}_{\rho }3/2^{-}>$ state. (iii) ${\Xi }_c(3080)$ favors to be classified as the $|{\Xi }_c{S}_{\rho \rho }1/2^{+}>$ state, i.e., the first radial excitation (2S) of ${\Xi }_c$. (iv) ${\Xi }_c(3055)$ is most likely to be the first $D$-wave excitation of ${\Xi }_c$ with $J^P=3/2^{+}$, favors the $|{\Xi }_c{}^2{D}_{\lambda \lambda }3/2^{+}>$ state. (v) ${\Xi }_c(3123)$ might be assigned to the $|{\Xi }_c^{\prime }{}^4{D}_{\lambda \lambda }3/2^{+}>$, $|{\Xi }_c^{\prime }{}^4{D}_{\lambda \lambda }5/2^{+}>$, or $|{\Xi }_c{}^2{D}_{\rho \rho }5/2^{+}>$ state. As a by-product, we calculate the strong decays of the bottom baryons ${\Sigma }_b^{\pm }$, ${\Sigma }_b^{\ast \pm }$ and ${\Xi }_b^{\ast }$, which are in good agreement with the recent observations as well.

15 pages, 9 figures

References in corpus (23)

• Heavy Baryons in a Quark Model
• Spectroscopy and Regge trajectories of heavy baryons in the relativistic quark-diquark picture
• Masses of excited heavy baryons in the relativistic quark-diquark picture
• Towards an understanding of heavy baryon spectroscopy
• Faddeev study of heavy baryon spectroscopy
• Strong Decays of Charmed Baryons in Heavy Hadron Chiral Perturbation Theory
• Strong decays of charmed baryons
• Charmed baryons in a relativistic quark model
• Charmed baryon strong decays in a chiral quark model
• Charmed and strange baryon resonances with heavy-quark spin symmetry
• Strong decays of heavy-light mesons in a chiral quark model
• Some mass relations for mesons and baryons in Regge phenomenology
• Observation of a new Xi(b) baryon
• Heavy baryon spectroscopy in QCD
• Strong decays of the newly observed $D(2550)$, $D(2600)$, $D(2750)$, and $D(2760)$
• ${\eta }^{\prime }$ photoproduction on the nucleons in the quark model
• Study of π^{-}p \to ηn at low energies in a chiral constituent quark model
• Measurement of masses of the ${\Xi }_c(2645)$ and ${\Xi }_c(2815)$ baryons and observation of ${\Xi }_c(2980)\to {\Xi }_c(2645)\pi$ %and observation of the ${\Xi }_c(2980)$ and observation of ${\Xi }_c(2980)\to {\Xi }_c(2645)\pi$
• Strong decays of heavy baryons in Bethe-Salpeter formalism
• Measurement of the masses and widths of the bottom baryons Sigma_b+- and Sigma_b*+-
• Combined Chiral Dynamics and MIT Bag Model Study of Strong Σ^{(*)}_Q \to Λ_QπDecays
• Study of the strong ${\Sigma }_b\to {\Lambda }_b\pi$ and ${\Sigma }_b^{\ast }\to {\Lambda }_b\pi$ in a non-relativistic quark model
• Charm and bottom baryons in nonperturbative quark dynamics

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• A review of the open charm and open bottom systems
• Assignments of ${\Lambda }_Q$ and ${\Xi }_Q$ baryons in the heavy quark-light diquark picture
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• Mass spectra and Regge trajectories of ${\Lambda }_c^{+}$, ${\Sigma }_c^0$, ${\Xi }_c^0$ and ${\Omega }_c^0$ Baryons
• Low-lying charmed and charmed-strange baryon states
• Strong Decays of Charmed Baryons in Heavy Hadron Chiral Perturbation Theory: An Update
• Understanding the newly observed ${\Omega }_c$ states through their decays
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• Excited State Mass spectra of Singly Charmed Baryons
• Dynamically generated $J^P=1/2^{-}(3/2^{-})$ singly charmed and bottom heavy baryons
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• Strong decays of higher excited heavy-light mesons in a chiral quark model
• $\Xi$ baryon strong decays in a chiral quark model
• Studies of charmed strange baryons in the $\Lambda D$ final state at Belle
• $D$-wave heavy baryons of the $SU(3)$ flavor $6_F$
• Newly observed ${\Lambda }_c(2860{)}^{+}$ at LHCb and its \emph{D}-wave partners ${\Lambda }_c(2880{)}^{+}$, ${\Xi }_c(3055{)}^{+}$ and ${\Xi }_c(3080{)}^{+}$
• A possible interpretation of the newly observed $\Omega (2012)$ state
• Study of $P$-wave excitations of observed charmed strange baryons
• Observation of ${\Xi }_c(2930{)}^0$ and updated measurement of $B^{-}\to K^{-}{\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$ at Belle
• Strong decay of ${\Lambda }_c(2940)$ as a $2P$ state in the ${\Lambda }_c$ family
• Mass spectra and strong decays of charmed and charmed-strange mesons
• Relativistic corrections to decays of heavy baryons in the quark model
• Interpretation of the newly observed ${\Lambda }_b(6146{)}^0$ and ${\Lambda }_b(6152{)}^0$ states in a chiral quark model
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• Evidence of a structure in ${\bar{K}}^0{\Lambda }_c^{+}$ consistent with a charged ${\Xi }_c(2930{)}^{+}$, and updated measurement of ${\bar{B}}^0\to {\bar{K}}^0{\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$ at Belle
• Nature of charmed strange baryons ${\Xi }_c(3055)$ and ${\Xi }_c(3080)$
• Understanding the newly observed ${\Xi }_c^0$ states through their decays
• Study of $2S$- and $1D$- excitations of observed charmed strange baryons
• Possible interpretation of the newly observed ${\Omega }_b$ states
• Towards establishing an abundant $B$ and $B_s$ spectrum up to the second orbital excitations
• Canonical interpretations of the newly observed ${\Xi }_c(2923{)}^0$, ${\Xi }_c(2939{)}^0$ and ${\Xi }_c(2965{)}^0$ resonances
• Toward establishing the low-lying $P$-wave ${\Sigma }_b$ states
• Systematic analysis of strange single heavy baryons ${\Xi }_c$ and ${\Xi }_b$
• ${\Lambda }_b(6146{)}^0$ state newly observed by LHCb
• Newly discovered ${\Xi }_c^0$ resonances and their parameters
• Low energy reactions $K^{-}p\to {\Sigma }^0{\pi }^0$, $\Lambda {\pi }^0$, ${\bar{K}}^{0}n$ and the strangeness $S=-1$ hyperons
• On the nature of ${\Xi }_c(2930)$
• New ${\Lambda }_b(6072{)}^0$ state as a $2S$ bottom baryon
• Properties of ${\Sigma }_Q^{\ast }$, ${\Xi }_Q^{\ast }$ and ${\Omega }_Q^{\ast }$ heavy baryons in cold nuclear matter
• The $1D$, $2D$ ${\Xi }_b$ and ${\Lambda }_b$ baryons
• Possibly New Charmed Baryon States from ${\bar{B}}^0\to p\bar{p}{D}^0$ Decay
• Low energy reaction $K^{-}p\to \Lambda \eta$ and the negative parity $\Lambda$ resonances
• Toward establishing the low-lying $P$-wave excited ${\Sigma }_c$ baryon states
• Theoretical interpretation of ${\Xi }_c(2970)$
• First determination of the spin-parity of ${\Xi }_c(3055{)}^{+,0}$ baryons
• Perturbative QCD analysis of neutral $B$-meson decays into $\sigma \sigma ,\sigma f_0$ and $f_0{f}_0$
• Radiative transitions of charmonium states in a constituent quark model
• Octet baryon and heavy meson interactions in chiral effective field theory
• Improved measurement of $\eta /{\eta }^{\prime }$ mixing in $B_{(s)}^0\to J/\psi {\eta }^{(\prime )}$ decays
• ${\Xi }_c(3055)$ as a scaling point to establish the excited ${\Xi }_c^{(\prime )}$ family