Reference : SU(3) flavor symmetry breaking in large $N_c$ excited baryons
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/205375
SU(3) flavor symmetry breaking in large $N_c$ excited baryons
English
Stancu, Floarea mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
23-Dec-2016
Physical Review. D, Particles and Fields
American Physical Society
94
114027(1-8)
Yes
International
0556-2821
1089-4918
College Park
MD
[en] baryon spectroscopy ; large Nc QCD ; group theory
[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.
http://hdl.handle.net/2268/205375
10.1103/PhysRevD.94.114027
http://arXiv:1612.02659[hep-ph]

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