High Energy Physics - Phenomenology
[Submitted on 8 Dec 2016 (v1), last revised 1 Feb 2017 (this version, v2)]
Title:SU(3) flavor symmetry breaking in large $N_c$ excited hyperons
View PDFAbstract:The $1/N_c$ expansion method for studying the mass spectrum of excited baryons is shortly reviewed together with applications to mixed symmetric states. The $[{\bf 70, \ell^+}]$ 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) $\times$ O(3) multiplets are made.
Submission history
From: Fl. Stancu [view email][v1] Thu, 8 Dec 2016 14:21:03 UTC (18 KB)
[v2] Wed, 1 Feb 2017 15:22:32 UTC (18 KB)
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