Speaker
Benoit Assi
(Fermilab)
Description
We begin by reviewing how NLL accuracy is achieved in modern parton showers, highlighting the recent Sherpa implementation, and then introduce our new information-theoretic matching framework to achieve beyond NLL accuracy. By minimizing a Kullback–Leibler functional under constraints set by precision QCD input observables (including theory uncertainties), we embed high-order predictions into fully differential, particle-level simulations with strictly positive event weights and the ability to impose multiple observable constraints simultaneously. We futher discuss HDSense a new efficient tool that approximates the full Fisher information matrix for observable selection to maximize sensitivity to underlying QCD parameters.
Author
Benoit Assi
(Fermilab)