[en] The masses of excited states of mixed orbital symmetry of nonstrange and strange baryons belonging to the lowest $[{\bf 70},1^-]$ multiplet are calculated in the $1/N_c$ expansion to order $1/N_c$ with a new method which allows to considerably reduce the number of linearly independent operators entering the mass formula. This study represents an extension to SU(6) of our work on nonstrange baryons, the framework of which was SU(4). The conclusion regarding the role of the flavor operator, neglected in previous SU(6) studies, is reinforced. Namely, both the flavor and spin operators contribute dominantly to the flavor-spin breaking.
Disciplines :
Physics
Author, co-author :
Matagne, Nicolas; Université de Mons - UMONS > physics > physique nucléaire et subnucléaire
Stancu, Floarea ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Language :
English
Title :
SU(6) [70,1-] baryon multiplet in the 1/N_c expansion
Publication date :
07 March 2011
Journal title :
Physical Review. D, Particles and Fields
ISSN :
0556-2821
eISSN :
1089-4918
Publisher :
American Physical Society, College Park, United States - Maryland
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
N. Matagne and F. Stancu, Phys. Lett. B 631, 7 (2005). PYLBAJ 0370-2693
N.N. Scoccola, J.L. Goity, and N. Matagne, Phys. Lett. B 663, 222 (2008). PYLBAJ 0370-2693 10.1016/j.physletb.2008.03.056
N. Matagne and Fl. Stancu, in Proceedings of the Bled Workshop on Dressing Hadrons, Bled, Slovenia, edited by, B. Golli, M. Rosina, and, S. Sirca, Bled Workshops in Physics (DMFA, Zaloznistvo, Ljubljana, 2010), Vol. 11, No. 1, pp. 37-43.
K. Nakamura (Particle Data Group), J. Phys. G JPGPED 0954-3899 37, 075021 (2010). 10.1088/0954-3899/37/7A/075021
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