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Ji-Si Pan

Publications and source records attributed to Ji-Si Pan.

2 recordsLinked to original sources

Investigating the mass spectra of $1F$-wave singly heavy $\Sigma_{Q}$, $\Xi^{\prime}_{Q}$, and $\Omega_{Q}$ baryons

In this work, we enumerated the mass spectra of the experimentally unobserved $1F$-wave states with the the orbital angular momentum $L$ = 3 for the singly heavy $\Sigma_{Q}$, $\Xi^{\prime}_{Q}$, and $\Omega_{Q}$ $(Q=c, b)$ baryons in the framework of quark-diquark configuration using the Regge trajectory model and the scaling rules. To determine the effective masses of the heavy quark and two light quarks, the relativistic effective mass formula are employed by combining the Coulomb potential. Within the spin-dependent Hamiltonian, we construct the mass shift forms as a non-diagonal symmetric $6\times 6$ matrix for the $1F$-wave states of $\Sigma_{Q}$, $\Xi^{\prime}_{Q}$, and $\Omega_{Q}$ baryons. Our analysis of mass spectra provides valuable insights to guide future experimental investigations, and enhances the understanding of the spectroscopic properties of unobserved $1F$-wave orbital excitations for these singly heavy baryons.

hep-ph

Study of the mass spectra of doubly heavy $Ξ_{QQ^{\prime}}$ and $Ω_{QQ^{\prime}}$ baryons

LHCb Collaboration first observed a doubly charmed baryon $Ξ^{++}_{cc}$ in the $Λ^{+}_{c}K^{-}π^{+}π^{+}$ decay with a mass of $3621.40\pm0.72\pm0.27$ MeV. In this paper, we enumerated the mass spectra of the radial and orbital excited states for the doubly heavy $Ξ_{QQ^{\prime}}$ and $Ω_{QQ^{\prime}}$ baryons using the Regge trajectory model and the scaling rules. Our studies suggest that $Ξ^{++}_{cc}$ can be grouped into the $1S$-wave state with the spin-parity quantum number $J^{P} = 1/2^{+}$. On the other hand, the mass of $Ξ_{cc}$ state with $J^{P} = 3/2^{+}$ is predicted to be $3699.69 \pm 4.59$ MeV. We also predict the mass spectra of the unknown ground and excited states for the doubly heavy $Ξ_{QQ^{\prime}}$ and $Ω_{QQ^{\prime}}$ baryons, which provide useful references for the experimental test in the future.

hep-ph