$\hat{I}\cdot$ and $\hat{I}{\cdot }^{\prime }$ mesons from $N_f=2+1$ lattice QCD at the physical point using topological charge operators

Yue Su, Nan Wang, Long-cheng Gui +3

By fitting the two-point correlation functions of topological charge density operators calculated on two $2+1$-flavor gauge ensembles with physical pion mass, we determine both the…