Light nuclei and nucleon form factors in $N_f=2+1$ lattice QCD

Abstract

We present our result of binding energy of light nuclei with the nuclear mass number less than or equal to four at the pion mass $m_\pi = 0.3$ GeV. The simulations are performed in $N_f=2+1$ QCD with Iwasaki gauge and a non-perturbative improved Wilson quark actions at the lattice spacing of $a = 0.09$ fm. We discuss the $m_\pi$ dependence of the binding energies by comparing with previous results. Furthermore, we show preliminary results for the axial charge and the Dirac radius obtained from the nucleon form factors at almost physical $m_\pi$.