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.
|ジャーナル||EPJ Web of Conferences|
|出版物ステータス||出版済み - 4 12 2010|
|イベント||19th International IUPAP Conference on Few-Body Problems in Physics, Few-Body 2009 - Bonn, ドイツ|
継続期間: 8 31 2009 → 9 5 2009
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)