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Kaon-Nucleon potential from lattice QCD · Around

2010

Kaon-Nucleon potential from lattice QCD

Ikeda, Y., Aoki, S., Doi, T. et al.

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We study the KN interactions in the I(J^{\pi})=0(1/2^-) and 1(1/2^-) channels and associated exotic state \Theta^+ from 2+1 flavor full lattice QCD simulation for relatively heavy quark mass corresponding to m_{\pi}=871 MeV.

The s-wave KN potentials are obtained from the Bethe-Salpeter wave function by using the method recently developed by HAL QCD (Hadrons to Atomic nuclei from Lattice QCD) Collaboration.
Potentials in both channels reveal short range repulsions: Strength of the repulsion is stronger in the I=1 potential, which is consistent with the prediction of the Tomozawa-Weinberg term.
The I=0 potential is found to have attractive well at mid range.

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Then

N. Ishii, S. Aoki and T. Hatsuda, Phys. Rev. Lett. 99
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T. Nakano et al
Original
2009
Later among the works it cites.
H. Nemura, N. Ishii, S. Aoki and T. Hatsuda, Phys. Lett. B 673
Original
2009
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P. Gubler, D. Jido, T. Kojo, T. Nishikawa and M. Oka, Phys. Rev. D 79
Original
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