# set_alphas_rcl¶

set_alphas_rcl(as, Q, Nf)

Sets the values of $$\alpha_\mathrm{s}$$ to as, the renormalization scale $$\mu_\mathrm{MS}$$ to Q and the number of active quark flavours to Nf. The choosen value of as should correspond to the physical value of $$\alpha_\mathrm{s}$$ at the scale Q computed in the Nf-flavour scheme. For Nf=-1 the quarks with mass less than Q are active flavours.

Parameters: s (float) – value of alpha_s Q (float) – renormalization scale Nf (int) – number of light quarks