[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
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