Asia-Pacific Symposium for Lattice Field Theory (APLAT 2020)

Studies on meson-baryon interactions in the HAL QCD method with all-to-all propagators

4 Aug 2020, 16:40

20m

online

Hadron Spectroscopy and Interactions Hadron Spectroscopy and Interactions

Speaker

Kotaro Murakami (*) (Yukawa Institute for Theoretical Physics, Kyoto University)

Description

We investigate meson-baryon interactions in the HAL QCD method with all-to-all propagators using the stochastic estimations. We mainly report the analysis of the S-wave kaon-nucleon interactions at $m_{\pi }\approx 570$ MeV. Since there are no quark-antiquark creation/annihilation processes in this system, all-to-all propagators merely play a role in increasing statistics. In addition, we present the preliminary results for the P-wave pion-nucleon interaction in the $I=3/2$ channel using the $\mathrm{\Delta }$ source operator on a small volume at $m_{\pi }\approx 870$ MeV, which has a bound state corresponding to the $\mathrm{\Delta }$(1232) state.

Presentation materials

MK_APLAT_wb.pdf