Speeding up MadGraph5_aMC@NLO

Kiran Ostrolenk; Olivier Mattelaer

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arXiv · 2102.00773

Speeding up MadGraph5_aMC@NLO

Kiran Ostrolenk·Olivier Mattelaer

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Abstract

In this paper we will describe two new optimisations implemented in MadGraph5_aMC@NLO, both of which are designed to speed-up the computation of leading-order processes (for any model). First we implement a new method to evaluate the squared matrix element, dubbed helicity recycling, which results in factor of two speed-up. Second, we have modified the multi-channel handling of the phase-space integrator providing tremendous speed-up for VBF-like processes (up to thousands times faster).

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Kiran Ostrolenk, Olivier Mattelaer. 2021-02-01. Speeding up MadGraph5_aMC@NLO. https://arxiv.org/abs/2102.00773

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