6533b870fe1ef96bd12cfa6d
RESEARCH PRODUCT
Energy and width of a narrowI=1/2DNNquasibound state
C. W. XiaoMakoto OkaAkinobu DotéTetsuo HyodoE. OsetMelahat Bayarsubject
PhysicsNuclear and High Energy Physics010308 nuclear & particles physicsNuclear TheoryFew-body systemsLambda01 natural sciencessymbols.namesakeVariational methodQuantum mechanicsIsospin0103 physical sciencessymbolsAtomic physicsNuclear Experiment010306 general physicsHamiltonian (quantum mechanics)Nuclear theorydescription
The energies and widths of $DNN$ quasi-bound states with isospin I=1/2 are evaluated in two methods, the fixed center approximation to the Faddeev equation and the variational method approach to the effective one-channel Hamiltonian. The $DN$ interactions are constructed so that they dynamically generate the $\Lambda_c(2595)$ (I=0, $J^{\pi} =1/2^-$) resonance state. We find that the system is bound by about 250 MeV from the $DNN$ threshold, $\sqrt{s} \sim 3500$ MeV. Its width including both the mesonic decay and the $D$ absorption, is estimated to be about 20-40 MeV. The I=0 $DN$ pair in the $DNN$ system is found to form a cluster that is similar to the $\Lambda_c(2595)$.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-10-31 | Physical Review C |