Chiral SU(3) dynamics and the quasibound K^-pp cluster

Details Chiral SU(3) dynamics and the quasibound K^-pp cluster Chiral SU(3) dynamics and the quasibound K^-pp cluster

2008-11-06

arxiv.org/abs/0811.0869v1

Physics

Nuclear Physics

Nuclear Theory

6 pages, 2 figures, Proceedings of International Conference on Exotic Atoms (EXA2008)

Scientific paper

The prototype of a Kbar nuclear cluster, K^-pp, has been investigated using effective KbarN potentials based on chiral SU(3) dynamics. Variational calculation shows a bound state solution with shallow binding energy B(K^-pp)=20 \pm 3 MeV and broad mesonic decay width \Gamma(KbarNN -> \pi Y N)=40 - 70 MeV. The KbarN(I=0) pair in the K^-pp system exhibits a similar structure as the \Lambda(1405). We have also estimated the dispersive correction, p-wave KbarN interaction, and two-nucleon absorption width.

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