Non-perturbative determination of improvement coefficients $$b_\mathrm{m}$$bm and $$b_\mathrm{A}-b_\mathrm{P}$$bA-bP and normalisation factor $$Z_\mathrm{m}Z_\mathrm{P}/Z_\mathrm{A}$$ZmZP/ZA with $$N_\mathrm{f}= 3$$Nf=3 Wilson fermions Academic Article