Mass spectra of singly heavy baryons in a self-consistent chiral quark-soliton model

Kim, June-Young (Department of Physics, Inha University, Incheon 22212, Republic of Korea) ; Kim, Hyun-Chul (Department of Physics, Inha University, Incheon 22212, Republic of Korea) (Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka 567-0047, Japan) (School of Physics, Korea Institute for Advanced Study (KIAS), Seoul 02455, Republic of Korea) ; Yang, Ghil-Seok (Department of Physics, Soongsil University, Seoul 06978, Republic of Korea)

06 September 2018

Abstract: We investigate the mass spectra of the lowest-lying singly heavy baryons, based on the self-consistent chiral quark-soliton model. We take into account the rotational 1/Nc and strange current quark mass (ms) corrections. Regarding ms as a small perturbation, we expand the effective chiral action to the second order with respect to ms. The mass spectra of heavy baryons are computed and compared with the experimental data. Fitting the classical masses of the heavy baryon to the center mass of each representation, we determine the masses of all the lowest-lying singly heavy baryons. We predict the mass of the Ωb* baryon to be 6081.9 MeV, when the second-order ms corrections are included.


Published in: Physical Review D 98 (2018)
Published by: APS
DOI: 10.1103/PhysRevD.98.054004
arXiv: 1801.09405
License: CC-BY-4.0



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