Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations

  • Pierre ArtoisenetEmail author
  • Rikkert Frederix
  • Olivier Mattelaer
  • Robbert Rietkerk
Open Access


We present a general method that allows one to decay narrow resonances in Les Houches Monte Carlo events in an efficient and accurate way. The procedure preserves both spin correlation and finite width effects to a very good accuracy, and is therefore particularly suited for the decay of resonances in production events generated at next-to-leading-order accuracy. The method is implemented as a generic tool in the Mad-Graph5 framework, giving access to a very large set of possible applications. We illustrate the validity of the method and the code by applying it to the case of single top and top quark pair production, and show its capabilities on the case of top quark pair production in association with a Higgs boson.


Monte Carlo Simulations Hadronic Colliders 


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Copyright information

© SISSA 2013

Authors and Affiliations

  • Pierre Artoisenet
    • 1
    Email author
  • Rikkert Frederix
    • 2
  • Olivier Mattelaer
    • 3
  • Robbert Rietkerk
    • 1
    • 4
  1. 1.Nikhef Theory GroupAmsterdamThe Netherlands
  2. 2.PH Department, TH Unit, CERNGeneva 23Switzerland
  3. 3.Department of PhysicsUniversity of Illinois at Urbana-ChampaignUrbanaU.S.A
  4. 4.Institute for Theoretical PhysicsUniversity of AmsterdamAmsterdamThe Netherlands

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