$W^+W^-$ production at NNLO+PS with MiNNLO$_{\rm PS}$

Understand

We consider $W^+W^-$ production in hadronic collisions and present the computation of next-to-next-to-leading order accurate predictions consistently matched to parton showers (NNLO+PS) using the MiNNLO$_{\rm PS}$ method.

• Spin correlations, interferences and off-shell effects are included by calculating the full process $pp \to e^+\nu_e \mu^-\bar{\nu}_\mu$.
• This is the first NNLO+PS calculation for $W^+W^-$ production that does not require an a-posteriori multi-differential reweighting.
• The evaluation time of the two-loop contribution has been reduced by more than one order of magnitude through a four-dimensional cubic spline interpolation.