https://doi.org/10.1051/epjconf/20100307016
Exotic states in the S=1 N-pi-K system and low-lying 1/2+ S=-1 resonances
1
Centro de Física Teórica, Departamento de Física, Universidade
de Coimbra, P-3004-516
Coimbra,
Portugal
2
Departamento de Física Teórica and IFIC, Centro Mixto
Universidad de Valencia-CSIC, 46100
Burjassot
( Valencia),
Spain
a e-mail: kanchan@teor.fis.uc.pt
In this manuscript we discuss about our study of the 
and
the NπK systems made by solving the Faddeev equations with the
two-body t-matrices obtained by solving the Bethe-Salpeter equations with the
potentials obtained from chiral dynamics. In the strangeness = -1 case, we found
that all the Λ and Σ resonances listed by the
particle data group, with spin-parity 1/2+ , in the 1550-1800 MeV
region get generated due to the involved three-body dynamics. This motivated us
to study the strangeness =1 three-body system, i.e., NπK ,
where we did not find any evidence for the Θ+ (1542)
but found a broad bump around 1700 MeV which has a
κ(800)N structure.
© Owned by the authors, published by EDP Sciences, 2010
