126 citations · 159 across the 6 of their papers we have counts for
6 papers
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…
Novel collider signatures in the type-I 2HDM+ model
Spyros Argyropoulos, Ulrich Haisch, Ilia Kalaitzidou
The 2HDM+ model is one of the main models used in the interpretations of dark matter searches at the LHC. So far, all the 2HDM+ benchmarks considered by the ATLAS and CMS exp…
Density dependent displaced vertex signatures as a novel probe of light dark sector scalars at the LHC
Spyros Argyropoulos, Clare Burrage, Christoph Englert
Dynamical theories of dark energy predict new degrees of freedom with particular environmental sensitivity to avoid constraints on fifth forces. We show that the similar, yet compl…
Benchmarking LHC searches for light 2HDM+ pseudoscalars
Spyros Argyropoulos, Ulrich Haisch
Using two suitable benchmark scenarios that satisfy the experimental constraints on the total decay width of the Higgs boson, we determine the bounds on light CP…
Collider Searches for Dark Matter through the Higgs Lens
Spyros Argyropoulos, Oleg Brandt, Ulrich Haisch
Despite the fact that dark matter constitutes one of the cornerstones of the standard cosmological paradigm, its existence has so far only been inferred from astronomical observati…
Effects of color reconnection on final states at the LHC
Spyros Argyropoulos, Torbjörn Sjöstrand
The modeling of color reconnection has become one of the dominant sources of systematic uncertainty in the top mass determination at hadron colliders. The uncertainty on the top ma…