PT Journal
AU Xie, JJ
   Martinez Torres, A
   Oset, E
TI Faddeev fixed-center approximation to the N K K(bar) system and the signature of a N*(1920)(1/2+) state
SO Physical Review C
JI Phys. Rev. C
PY 2011
BP 065207
EP 8pp
VL 83
IS 6
DI 10.1103/PhysRevC.83.065207
LA English
AB We perform a calculation for the three-body N (K) over barK scattering amplitude by using the fixed-center approximation to the Faddeev equations, taking the interaction between N and (K) over bar, N and K, and (K) over bar and K from the chiral unitary approach. The resonant structures show up in the modulus squared of the three-body scattering amplitude and suggest that a N (K) over barK hadron state can be formed. Our results are in agreement with others obtained in previous theoretical works, which claim a new N* resonance around 1920 MeV with spin-parity J(P) = 1/2(+). The existence of these previous works allows us to test the accuracy of the fixed center approximation in the present problem and sets the grounds for possible application in similar problems, as an explorative tool to determine bound or quasibound three-hadron systems.
ER