Heavy-flavour pentaquarks in a chiral constituent quark model

[en] Within the chiral constituent quark model of Glozman and Riska, we discuss the stability of heavy pentaquarks, i.e. hadrons containing four light quarks and a heavy antiquark. The spin-dependent part of the Hamiltonian is dominated by the short-range part of the Goldstone-boson-exchange interaction. We find that these systems are not bound, having an energy above the lowest dissociation threshold into a baryon and a meson.

Disciplines :

Physics

Author, co-author :

Genovese, M.; Université Joseph Fourier - Grenoble 1 - UJF > Institut des Sciences Nucléaires > postdoc

Richard, J. M.; Université Joseph Fourier - Grenoble 1 - UJF > Institut des Sciences Nucléaires > professor

Stancu, Floarea ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)

Pepin, S.; University of Manchester > Department of Physics and Astronomy > Theoretical Physics > postdoc

Language :

English

Title :

Heavy-flavour pentaquarks in a chiral constituent quark model

Publication date :

1998

Journal title :

Physics Letters B

ISSN :

0370-2693

eISSN :

1873-2445

Publisher :

Elsevier Science, Amsterdam, Netherlands

Volume :

B425

Pages :

171-176

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://arxiv.org/abs/hep-ph/9712452

Available on ORBi :

since 16 June 2014

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The values of the isospin I associated to a given hypercharge can be checked with Table 8.4 of Ref. [25].

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