PT Journal
AU Vijande, J
   Valcarce, A
   Richard, JM
TI Stability of hexaquarks in the string limit of confinement
SO Physical Review D
JI Phys. Rev. D
PY 2012
BP 014019
EP 6pp
VL 85
IS 1
DI 10.1103/PhysRevD.85.014019
LA English
AB The stability of systems containing six quarks or antiquarks is studied within a simple string model inspired by the strong-coupling regime of quantum chromodynamics and used previously for tetraquarks and pentaquarks. We discuss both six-quark (q(6)) and three-quark-three-antiquark (q(3)($) over bar (3)) states. The quarks are assumed to be distinguishable and thus not submitted to antisymmetrization. It is found that the ground state of (q(6)) is stable against dissociation into two isolated baryons. For the case of (q(3)($) over bar (3)), our results indicate the existence of a bound state very close to the threshold. The investigations are extended to (q(3)Q(3)) and (Q(3) ($) over bar (3)) systems with two different constituent masses, and their stability is discussed as a function of the mass ratio.
ER