Article (Scientific journals)
Positive parity pentaquarks in a Goldstone boson exchange model
Stancu, Floarea
1998In Physical Review. D, Particles and Fields, D58, p. 111501
Peer reviewed
 

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Keywords :
pentaquarks; Goldstone boson exchange model; stability
Abstract :
[en] We study the stability of the pentaquarks $uudd\overline{Q}$, $uuds\overline{Q}$ and $udss\overline{Q}$ ($Q = c$ or $b$) of positive parity in a constituent quark model based on Goldstone boson exchange interaction between quarks. The pentaquark parity is the antiquark parity times that of a quark excited to a p-shell. We show that the Goldstone boson exchange interaction favors these pentaquarks much more than the negative parity ones of the same flavour content but all quarks in the ground state. We find that the nonstrange pentaquarks are stable against strong decays.
Disciplines :
Physics
Author, co-author :
Stancu, Floarea ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Language :
English
Title :
Positive parity pentaquarks in a Goldstone boson exchange model
Publication date :
13 October 1998
Journal title :
Physical Review. D, Particles and Fields
ISSN :
0556-2821
eISSN :
1089-4918
Publisher :
American Physical Society, College Park, United States - Maryland
Volume :
D58
Pages :
111501
Peer reviewed :
Peer reviewed
Available on ORBi :
since 10 April 2014

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