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arXiv:2102.00773
MCNET-21-01
CP3-21-01
MAN/HEP/2021/001
Eur.Phys.J. C81 (2021) 435

by: Mattelaer, O. (Louvain U., CP3) et al.

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).
publ_date: 
Tuesday, February 2, 2021