Article (Scientific journals)
Nucleon nucleon interaction in a chiral constituent quark model
Bartz, Daniel; Stancu, Floarea
2002In Nuclear Physics A, A699 (1-2), p. 316-319
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Keywords :
constituent quark model; resonating group method; nucleon-nucleon phase shifts
Abstract :
[en] We study the nucleon-nucleon interaction within a chiral constituent quark model where the hyperfine interaction is due to pseudoscalar meson exchange. We calculate the S-3(1) and S-1(0) phase shifts by using the resonating group method. Their behaviour clearly indicates the presence of a strong repulsive core at short distance. This is due to the spin-flavour symmetry of the interaction and to the quark interchange between the two interacting nucleons. We add a sigma-meson exchange quark-quark interaction which provides a medium range attraction necessary to describe the S-1(0) phase shift. We also explore the role of a tensor interaction at the quark level.
Disciplines :
Physics
Author, co-author :
Bartz, Daniel ;  Université de Liège - ULiège > Interactions fondamentales en physique et astrophysique
Stancu, Floarea ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Language :
English
Title :
Nucleon nucleon interaction in a chiral constituent quark model
Publication date :
25 February 2002
Journal title :
Nuclear Physics A
ISSN :
0375-9474
eISSN :
1873-1554
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
A699
Issue :
1-2
Pages :
316-319
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 28 January 2011

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