Speeding up MadGraph5_aMC@NLO

Feb 1, 2021
Published in:
  • Eur.Phys.J.C 81 (2021) 5, 435
  • Published: May 20, 2021
e-Print:
Report number:
  • MCNET-21-01,
  • CP3-21-01,
  • MAN/HEP/2021/001

Citations per year

20202021202220232024146
Abstract: (arXiv)
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).
Note:
  • Submitted to European Physical Journal C
  • higher-order
  • phase space
  • helicity
  • Monte Carlo
  • vector boson: fusion
  • numerical calculations