Reference : The $[ 70,1^-]$ baryon multiplet in the $1/N_c$ expansion revisited

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/2268/83113

Title :	The $[ 70,1^-]$ baryon multiplet in the $1/N_c$ expansion revisited
Language :	English
Author, co-author :	Matagne, Nicolas [ > > ]
	Stancu, Floarea [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Publication date :	2007
Journal title :	AIP Conference Proceedings
Publisher :	American Institute of Physics
Volume :	892
Pages :	285-288
Audience :	International
ISSN :	0094-243X
Abstract :	[en] The mass splittings of the baryons belonging to the $[{\bf 70},1^-]$-plet are derived by using a simple group theoretical approach to the matrix elements of the mass formula. The basic conclusion is that the first order correction to the baryon masses is of order $1/N_c$ instead of order $N^0_c$, as previously found. The conceptual difference between the ground state and the excited states is therefore removed.
Permalink :	http://hdl.handle.net/2268/83113
DOI :	10.1063/1.2714396

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