Speaker
Description
The increasing precision at collider experiments calls for theoretical predictions that combine fixed-order accuracy with the fully exclusive description of final states provided by parton showers. Achieving this combination beyond next-to-leading-order remains a major challenge, in particular while preserving the logarithmic accuracy of the shower.
In this talk, we present first results towards higher-order matching using the PanScales framework. Focusing on $e^+e^-$ collisions, we construct a matching procedure that incorporates the full set of (double-)real leading colour $\mathcal{O}(\alpha_s^2)$ contributions, while retaining the logarithmic structure of the showers.
Beyond its immediate application to event-shape observables, our work establishes an important stepping stone towards higher-order matching in lepton collisions and provides a foundation for matching logarithmically accurate showers to higher-order calculations in hadron collisions.