Addendum to: Towards next-to-next-to-leading-log accuracy for the width difference in the Bs − $$ {\overline{B}}_s $$ system: fermionic contributions to order (mc/mb)0 and (mc/mb)1

Abstract

We calculate the three-loop master integrals of ref. [1] in analytic form. This allows us to present the fermionic contributions to the ∆B = 2 Wilson coefficients of the B-B decay matrix in next-to-next-to-leading order of QCD with full analytic dependence on the mass of the charm quark in the fermionic loops.