SU(3)-breaking ratios for $D_{(s)}$ and $B_{(s)}$ mesons

Peter A Boyle, Luigi Del Debbio, Nicolas Garron +4

We present results for the $SU(3)$ breaking ratios of decay constants $f_{D_s}/f_D$ and $f_{B_s}/f_B$ and - for the first time with physical pion masses - the ratio of bag paramete…