Chiral SU ( 3 ) dynamics and the quasibound K − pp cluster
نویسندگان
چکیده
The prototype of a K̄ nuclear cluster, K−pp, has been investigated using effective K̄N potentials based on chiral SU(3) dynamics. Variational calculation shows a bound state solution with shallow binding energy B(K−pp) = 20±3 MeV and broad mesonic decay width Γ (K̄NN → πY N) = 40 70 MeV. The K̄N(I = 0) pair in the K−pp system exhibits a similar structure as the Λ(1405). We have also estimated the dispersive correction, p-wave K̄N interaction, and two-nucleon absorption width.
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تاریخ انتشار 2008