Article (Scientific journals)
Dynamical study of the pentaquark antidecuplet
Stancu, Floarea
2004In Physics Letters B, 595, p. 269-276
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Keywords :
light pentaquarks; baryon spectroscopy; pseudoscalar meson exchange model
Abstract :
[en] Dynamical calculations are performed for all isomultiplets of the flavour antidecuplet to which the newly discovered pentaquark Theta(+) belongs. The framework is a constituent quark model where the short-range interaction has a flavour-spin structure. In this model the lowest pentaquarks have positive parity. Each antidecuplet member is described by a variational solution with the Pauli principle properly taken into account. By fitting the mass of Theta(+) of minimal content uudd, the mass of Xi(--), of minimal content ddss (u) over bar, is predicted at approximately 1960 MeV. The influence of the octet-antidecuplet mixing on the masses of the Y = I and 0 pentaquarks is considered within the same model and the role of the hyperfine interaction in this mixing is pointed out. (C) 2004 Elsevier B.V. All rights reserved.
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 :
Dynamical study of the pentaquark antidecuplet
Publication date :
12 August 2004
Journal title :
Physics Letters B
ISSN :
0370-2693
eISSN :
1873-2445
Publisher :
Elsevier Science Bv, Amsterdam, Netherlands
Volume :
595
Pages :
269-276
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 05 April 2014

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