New look at the $[{\bf 70},1^-]$ baryon multiplet in the $1/N_c$ expansion

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dc.creatorMatagne, N.
dc.creatorStancu, Fl.
dc.date2006-10-09
dc.date2008-07-16
dc.date.accessioned2026-07-07T11:58:52Z
dc.date.available2026-07-07T11:58:52Z
dc.descriptionSo far, the masses of excited states of mixed orbital symmetry and in particular those of nonstrange $[{\bf 70},1^-]$ baryons derived in the $1/N_c$ expansion were based on the separation of a system of $N_c$ quarks into a symmetric core and an excited quark. Here we avoid this separation and show that an advantage of this new approach is to substantially reduce the number of linearly independent operators entering the mass formula. A novelty is that the isospin-isospin term becomes as dominant in $Δ$ as the spin-spin term in $N$ resonances.
dc.description12 pages, 7 tables, to be published in Nuclear Physics A
dc.identifierhttps://arxiv.org/abs/hep-ph/0610099
dc.identifierhttp://arxiv.org/abs/hep-ph/0610099
dc.identifierNucl.Phys.A811:291-305,2008
dc.identifierdoi:10.1016/j.nuclphysa.2008.07.006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206371
dc.subjectHigh Energy Physics - Phenomenology
dc.titleNew look at the $[{\bf 70},1^-]$ baryon multiplet in the $1/N_c$ expansion
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