Speaker
Description
In this talk, I will present recent progress in the analytic computation of the two-loop penguin jet function. This function is a key ingredient in the factorised description of the $Q_1$-$Q_{7\gamma}$ interference contribution to inclusive (B)-meson decays, which constitutes an important source of theoretical uncertainty in precision flavour physics. Its analytic computation therefore represents an important step towards improving theoretical predictions for these observables.
This calculation requires the evaluation of a set of master integrals that depend on the charm-quark mass as well as the energy sharing between the quark and antiquark. I will demonstrate how all relevant master integrals can be computed analytically in terms of iterated integrals by separating the dependence on the different scales.