[en] 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.
Disciplines :
Physics
Author, co-author :
Stancu, Floarea ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Language :
English
Title :
SU(3) flavor symmetry breaking in large $N_c$ excited baryons
Publication date :
23 December 2016
Journal title :
Physical Review. D, Particles and Fields
ISSN :
0556-2821
eISSN :
1089-4918
Publisher :
American Physical Society, College Park, United States - Maryland
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