Charmed and $\varphi$ meson decay constants from 2+1-flavor lattice QCD

Ying Chen, Wei-Feng Chiu, Ming Gong +2

On a lattice with 2+1-flavor dynamical domain-wall fermions at the physical pion mass, we calculate the decay constants of $D_s^{(\ast )}$, $D^{(\ast )}$ and $\varphi$. The lattice size is $48…