Reference : [56,4(+)] baryons in the 1/N-c expansion
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/83118
[56,4(+)] baryons in the 1/N-c expansion
English
Matagne, Nicolas [> >]
Stancu, Floarea mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Jan-2005
Physical Review D
American Physical Soc
71
1
Yes
International
0556-2821
College Pk
[en] Using the 1/N-c expansion of QCD, we analyze the spectrum of positive parity resonances with strangeness S=0, -1, -2, and -3 in the 2-3 GeV mass region, supposed to belong to the [56,4(+)] multiplet. The mass operator is similar to that of [56,2(+)], previously studied in the literature. The analysis of the latter is revisited. In the [56,4(+)] multiplet we find that the spin-spin term brings the dominant contribution and that the spin-orbit term is entirely negligible in the hyperfine interaction, in agreement with constituent quark model results. More data are strongly desirable, especially in the strange sector in order to fully exploit the power of this approach.
http://hdl.handle.net/2268/83118
10.1103/PhysRevD.71.014010

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
0409261v3Publisher postprint179 kBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.