%0 Journal Article
%T A narrow quasi-bound state of the DNN system
%A Dote, A.
%A Bayar, M.
%A Xiao, C. W.
%A Hyodo, T.
%A Oka, M.
%A Oset, E.
%J Nuclear Physics A
%D 2013
%V 914
%I Elsevier Science Bv
%@ 0375-9474
%G English
%F Dote_etal2013
%O WOS:000324847700071
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1602), last updated on Thu, 24 Oct 2013 10:57:22 +0000
%X We have investigated a charmed system of DNN (composed of two nucleons and a D meson) by a complementary study with a variational calculation and a Faddeev calculation with fixed-center approximation (Faddeev-FCA). In the present study, we employ a DN potential based on a vector-meson exchange picture in which a resonant A(c)(2595) is dynamically generated as a DN quasi-bound state, similarly to the A(1405) as a (K) over barN one in the strange sector. As a result of the study of variational calculation with an effective DN potential and three kinds of NN potentials, the DNN(J(pi) =0(-), I = 1/2) is found to be a narrow quasi-bound state below A(c)(2595)N threshold: total binding energy similar to 225 MeV and mesonic decay width similar to 25 MeV. On the other hand, the J(pi) =1(-) state is considered to be a scattering state of A(c)(2595) and a nucleon. These results are essentially supported by the Faddeev-FCA calculation. By the analysis of the variational wave function, we have found a unique structure in the DNN(J(pi) = 0, I = 1/2) such that the D meson stays around the center of the total system due to the heaviness of the D meson.
%K Nuclear system with a D meson
%K Few-body system
%K Variational calculation
%K Faddeev calculation
%R 10.1016/j.nuclphysa.2013.02.090
%U https://doi.org/10.1016/j.nuclphysa.2013.02.090
%P 499-504