@article{tolos_cabrera_ramos_polls_2005, 
  title={The effect of the in-medium Θ^+ pentaquark on the kaon optical
  potential}, 
  abstractNote={The kaon nuclear optical potential is studied including the effect of the
Θ^+ pentaquark. The one-nucleon contribution is obtained using an
extension of the Jülich meson-exchange potential as bare kaon-nucleon
interaction. Significant differences between a fully self-consistent
calculation and the usually employed low-density Tρ approach are observed.
The influence of the one-nucleon absorption process, K N →Θ^+, on the
kaon optical potential is negligible due to the small width of the pentaquark.
In contrast, the two-nucleon mechanism, K N N →Θ^+ N, estimated from
the coupling of the pentaquark to a two-meson cloud, provides the required
amount of additional kaon absorption to reconcile with data the systematically
low K^+-nucleus reaction cross sections found by the theoretical models.}, 
  author={Tolos and Cabrera and Ramos and Polls}, 
  year={2005}, 
  month={Mar}
  }