Heavy baryons in a pion mean-field approach: A brief review

Abstract

We review in this paper a series of recent works on properties of singly heavy baryons, based on a pion mean-field approach. In the limit of an infinitely heavy-quark mass, the heavy quark inside a heavy baryon can be regarded as a static color source. In this limit, a heavy baryon can be viewed as $N_c-1$ valence quarks bound by the pion mean fields which are created self-consistently by the presence of the $N_c$ valence quarks. We show that this mean-field approach can successfully describe the masses and the magnetic moments of the lowest-lying singly heavy baryons, using all the parameters fixed in the light-baryon sector except for the hyperfine spin-spin interactions. We also review a recent work on identifying the newly found excited ${\Omega }_c$ baryons reported by the LHCb Collaboration. We discuss possible scenarios to identify them. Finally, we give a future perspective on this pion mean-field approach.

18 pages, 8 figures. An invited review which will be published in ournal of the Korean Physical Society

References in corpus (9)

• Observation of Excited ${\Omega }_c$ Charmed Baryons in $e^{+}{e}^{-}$ Collisions
• Observation of the doubly strange b baryon Omega_b-
• Observation of a new Xi(b) baryon
• Observation of two new ${\Xi }_b^{-}$ baryon resonances
• Precision measurement of the mass and lifetime of the ${\Xi }_b^0$ baryon
• Precision measurement of the mass and lifetime of the Xi_b^- baryon
• Strong decays of exotic and non-exotic heavy baryons in the chiral quark-soliton model
• Pion mean fields and heavy baryons
• Electromagnetic mass differences of SU(3) baryons within a chiral soliton model

Cited by in corpus (13)

• Electromagnetic transitions of the singly charmed baryons with spin 3/2
• Magnetic transitions and radiative decays of singly heavy baryons
• Gravitational form factors of the baryon octet with flavor SU(3) symmetry breaking
• Electromagnetic form factors of the baryon decuplet with flavor SU(3) symmetry breaking
• Improved pion mean fields and masses of singly heavy baryons
• Electromagnetic transition form factors, $E2/M1$ and $C2/M1$ ratios of the baryon decuplet
• Axial-vector transition form factors of the baryon octet to the baryon decuplet with flavor SU(3) symmetry breaking
• Axial-vector transition form factors of the singly heavy baryons
• Medium modification of singly heavy baryons in a pion-mean field approach
• Exotic Baryons in Chiral Soliton Models
• Structure of heavy baryons in a pion mean-field approach
• Energy-momentum tensor of the nucleon on the light front: Abel tomography case
• Light-cone distribution amplitudes of the nucleon and $\Delta$ baryon