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| Reference : [70,l+] baryons in large Nc QCD revisited: The effect on Regge trajectories |
| Scientific journals : Article | |||
| Physical, chemical, mathematical & earth Sciences : Physics | |||
| http://hdl.handle.net/2268/165087 | |||
| [70,l+] baryons in large Nc QCD revisited: The effect on Regge trajectories | |
| English | |
Matagne, Nicolas  [University of Mons > Physique > Service de Physique Nucléaire et Subnucléaire > >] | |
| Stancu, Floarea [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >] | |
| 25-Apr-2013 | |
| Physical Review. D, Particles and Fields | |
| American Physical Society | |
| 87 | |
| April | |
| 076012 | |
| Yes | |
| International | |
| 0556-2821 | |
| 1089-4918 | |
| College Park | |
| MD | |
| [en] baryon spectroscopy ; large Nc QCD | |
| [en] A simple procedure within the 1/N_c expansion method where all the N_c
quarks are treated on the same footing has been found successful in describing mixed symmetric negative parity baryon states belonging to the [{\bf 70},\ell^-] multiplets of the N = 1 and 3 bands. Presently it is applied to mixed symmetric positive parity [{\bf 70},0^+] and [{\bf 70},2^+] multiplets of the N = 2 band. We search for the most dominant terms in the mass formula. The results are compared to those obtained in the procedure where the system is separated into a core and an excited quark. We find that both the spin and isospin operators of the entire system of N_c quarks play dominant roles in describing the data, like for negative parity states. As a by-product we present the contribution of the leading spin-isospin singlet term as a function of the band number, which hints at distinct Regge trajectories for the symmetric and mixed symmetric states. | |
| Researchers ; Professionals ; Students | |
| http://hdl.handle.net/2268/165087 | |
| 10.1103/PhysRevD.87.076012 |
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