[en] We calculate the positive and negative parity spectrum of baryons by diagonalizing the hyperfine Hamiltonian in a space corresponding to the SU(6) multiplets 56,70 and 20. THe highest spin considered is J = 7/2 for positive parity and J = 5/2 for negative parity. The main difference with the work of Isgur and Karl based on the harmonic oscillator is that we consider the more realistic unperturbed wave functions derived variationally by Carlson, Kogut and Pandharipande in a flux-tube quark model. The finite size of the quark is also taken into account.
Disciplines :
Physics
Author, co-author :
Sartor, Renato ; Université de Liège - ULiège > Institut de Physique > Physique Nucléaire Théorique
Stancu, Floarea ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Language :
English
Title :
Hyperfine splitting in a realistic basis for baryons
Publication date :
01 January 1985
Journal title :
Physical Review. D, Particles and Fields
ISSN :
0556-2821
eISSN :
1089-4918
Publisher :
American Physical Society, United States - Maryland
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