2016/12/23 by Fl. Stancu
Physics and Astronomy · #Baryon #Black Holes and Theoretical Physics #Excited state #Hyperon #Multiplet #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Spectral line #Strangeness #Symmetry breaking #hep-ph
paper · pdf · doi:10.1103/physrevd.94.114027
published as Phys.Rev.D94(2016)no.11,114027 · corrected typos. arXiv admin note: substantial text overlap with arXiv:1604.07324
openalex publication_date 2016/12/23 · openalex created_date 2017/01/06 · arxiv created 2017/02/01 · arxiv updated 2017/02/02 · openalex updated_date 2026/08/05
The 1/Nc expansion method for studying the mass spectrum of excited baryons is shortly reviewed together with applications to mixed symmetric states. The [70,\ensuremathℓ+] multiplet, belonging to the N=2 band, is reanalyzed, with emphasis on hyperons and the SU(3) symmetry breaking operators entering the mass formula to first order. An important result is that the hierarchy of masses as a function of strangeness is correctly reproduced for all multiplets. Predictions for unknown excited hyperons to SU(6)\ifmmode×\else\texttimes\fiO(3) multiplets are made.