S-wave meson-baryon potentials with strangeness from Lattice QCD

Yoichi Ikeda for HAL QCD Collaboration

S-wave meson-baryon potentials with strangeness from Lattice QCD

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arxiv 1111.2663 v1 pith:TJIPCVNN submitted 2011-11-11 hep-lat hep-phnucl-th

Yoichi Ikeda for HAL QCD Collaboration This is my paper

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keywords potentialss-wavelatticemeson-baryonamplitudesblockingcalculatedchannels

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We study the s-wave I=2 \pi \Sigma and I=1 KN interactions from 2+1 flavor full lattice QCD simulation for relatively heavy quark mass corresponding to m_{\pi}=700 MeV. The s-wave meson-baryon potentials are obtained from the Nambu-Bethe-Salpeter amplitudes. Potentials in both channels reveal short range repulsions, which suggest the importance of the Pauli blocking effect. The I=1 KN scattering phase shifts are calculated and compared with the existing experimental data.

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$S$-wave kaon-nucleon interactions from lattice QCD at the physical point
hep-lat 2025-08 conditional novelty 6.0 of 10

First physical-point lattice QCD calculation of S-wave kaon-nucleon interactions finds no resonance or bound state, with scattering lengths -0.226(5) fm (I=1) and +0.031(62) fm (I=0).

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