TY  - JOUR
AU  - Dote, A.
AU  - Bayar, M.
AU  - Xiao, C. W.
AU  - Hyodo, T.
AU  - Oka, M.
AU  - Oset, E.
PY  - 2013
DA  - 2013//
TI  - A narrow quasi-bound state of the DNN system
T2  - Nucl. Phys. A
JO  - Nuclear Physics A
SP  - 499
EP  - 504
VL  - 914
PB  - Elsevier Science Bv
KW  - Nuclear system with a D meson
KW  - Few-body system
KW  - Variational calculation
KW  - Faddeev calculation
AB  - 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.
SN  - 0375-9474
UR  - https://doi.org/10.1016/j.nuclphysa.2013.02.090
DO  - 10.1016/j.nuclphysa.2013.02.090
LA  - English
N1  - WOS:000324847700071
ID  - Dote_etal2013
ER  -