Partial wave decomposition on the lattice and its applications to the HAL QCD method

Understand

The approximated partial wave decomposition method to the discrete data on a cubic lattice, developed by C.

• W.
• Misner, is applied to the calculation of $S$-wave hadron-hadron scatterings by the HAL QCD method in lattice QCD.
• We consider the Nambu-Bethe-Salpeter (NBS) wave function for the spin-singlet $\Lambda_c N$ system calculated in the $(2+1)$-flavor QCD on a $(32a~\mathrm{fm})^3$ lattice at the lattice spacing $a\simeq0.0907$ fm and $m_\pi \simeq 700$ MeV.