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$K^-pp$ system with chiral SU(3) effective interaction · Around

2008

$K^-pp$ system with chiral SU(3) effective interaction

Doté, Akinobu, Hyodo, Tetsuo, Weise, Wolfram

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The $K^-pp$ system is investigated using a variational approach with realistic two-body interactions: the Argonne v18 $NN$ potential and an energy dependent $\bar{K}N$ effective interaction derived from chiral SU(3) coupled-channel dynamics.

Uncertainties in subthreshold extrapolations of the $\bar{K}N$ interaction are considered.
A weakly bound $K^-pp$ state is found, with a binding energy $B = (19\pm 3)$ MeV substantially smaller than suggested in previous calculations.
The decay width $\Gamma(K^-pp\to \pi\Sigma N)$ is estimated to range between about 40 and 70 MeV.

Built on

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Then

T. Yamazaki and Y. Akaishi, Phys. Rev. C76
2007
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N. V. Shevchenko, A. Gal, and J. Mares, Phys. Rev. Lett. 98
2007
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2007
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A. Dot e ´ \acute{\rm e} and W. Weise, Prog. Theor. Phys. Suppl. 168
2007
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W. Weise and R. Härtle, arXiv:nucl-th/0801.1467, Nucl. Phys. A (2008), in print
2008
Closest in time.
A. Dot e ´ \acute{\rm e} , T. Hyodo and W. Weise, in preparation (2008)
2008
Closest in time.

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