Precision Cell Resampling with a Relative and Resonant Aware Metric

TL;DR

The paper introduces a new metric for scattering events that improves cell resampling by reducing negative weights and accurately preserving resonance properties, demonstrated on W boson production events.

Contribution

A novel metric based on relative transverse momenta that enhances event resampling accuracy and resonance preservation in particle physics simulations.

Findings

Negative weights are substantially reduced using the new metric.

High accuracy in preserving resonance properties during resampling.

Effective demonstration on NLO W boson production events.

Abstract

We present a metric on the space of scattering events based on relative transverse momenta and with explicit sensitivity to intermediate resonances. With this new metric, negative weights in an event sample can be reduced substantially through cell resampling, while preserving the predicted properties of the resonance with high accuracy. We demonstrate the efficiency on a NLO event sample for the production of a leptonically decaying W boson together with two jets.