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hep-ph2026
MadSpin2: automated spin-entangled decays of heavy resonances via the spin-density matrix formalism
Spyros Argyropoulos, Valentin Durupt, Olivier Mattelaer
The simulation of processes that contain multiple particles from the decay of unstable resonances becomes computationally challenging both at leading order and beyond. This paper p…
hep-ph2026
Experimental prospects for quantum decoherence measurements at colliders
Rafael Aoude, José Manuel Camacho, Valentin Durupt +6
We study the impact of radiation on quantum systems defined by the spins of elementary fermion-antifermion pairs produced at colliders. We present predictions for several processes…
hep-ph2025★ 5 cited
Automated computation of spin-density matrices and quantum observables for collider physics
Valentin Durupt, Fabio Maltoni, Olivier Mattelaer
We present a fully automated framework to compute production spin-density matrices for generic collider processes at tree level within \textsc{MadGraph5\_aMC@NLO}. The method assem…