Reference : Positive parity pentaquarks in a Goldstone boson exchange model
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/165426
Positive parity pentaquarks in a Goldstone boson exchange model
English
Stancu, Floarea mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
13-Oct-1998
Physical Review. D, Particles and Fields
American Physical Society
D58
111501
Yes
International
0556-2821
1089-4918
College Park
MD
[en] pentaquarks ; Goldstone boson exchange model ; stability
[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.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/165426
10.1103/PhysRevD.58.111501
http://arxiv.org/abs/hep-ph/9803442

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