Mass Splittings of the Baryon Decuplet and Antidecuplet with Second-order Flavor Symmetry Breakings within a Chiral Soliton Model

作者：Yang Ghil Seok^*; Kim Hyun Chul

来源：Journal of the Korean Physical Society, 2012, 61(12): 1956-1964.

DOI：10.3938/jkps.61.1956

• Mass splittings of SU(3) baryons
• Chiral soliton model
• Flavor symmetry breaking

We revisit the mass splittings of SU(3) baryons, taking into account the second-order effects of isospin and SU(3) flavor symmetry breakings within the framework of a chiral soliton model. Compared to the baryon masses with the first-order corrections, those of the baryon decuplet turn out to be improved. The mass of the N* as a member of the baryon antidecuplet is obtained as M-N* = (1689.8 +/- 6.8) MeV, which is in agreement with the recent experimental data. The pion-nucleon sigma term becomes Sigma(pi N) = (50.5 +/- 5.4) MeV.

• 出版日期2012-12