Kaon-nucleon potential from lattice QCD

Y. Ikeda, S. Aoki, T. Doi, T. Hatsuda, T. Inoue, N. Ishii, K. Murano, H. Nemura, K. Sasaki

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Abstract

We study the K N interactions in the I(Jπ) = 0(1/2-) and 1(1/2-) channels and associated exotic state Θ+ from 2+1 flavor full lattice QCD simulation for relatively heavy quark mass corresponding to mπ = 871 MeV. The s-wave K N 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. From these potentials, the K N scattering phase shifts are calculated and compared with the experimental data.

Original languageEnglish
Article number03007
JournalEPJ Web of Conferences
Volume3
DOIs
Publication statusPublished - Apr 12 2010
Event19th International IUPAP Conference on Few-Body Problems in Physics, Few-Body 2009 - Bonn, Germany
Duration: Aug 31 2009Sep 5 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Ikeda, Y., Aoki, S., Doi, T., Hatsuda, T., Inoue, T., Ishii, N., Murano, K., Nemura, H., & Sasaki, K. (2010). Kaon-nucleon potential from lattice QCD. EPJ Web of Conferences, 3, [03007]. https://doi.org/10.1051/epjconf/20100303007