Stefano Actis
Paul Scherrer Institute
19 Papers
114 Citations
Stefano Actis is an academic researcher from Paul Scherrer Institute. The author has contributed to research in topics: Bhabha scattering & Feynman diagram. The author has an hindex of 10, co-authored 19 publications. Previous affiliations of Stefano Actis include University of Turin.
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Papers
Recursive generation of one-loop amplitudes in the Standard Model
TL;DR: Recola as discussed by the authors is a tensor-integral library for the recursive generation of tree-level and one-loop amplitudes in the Standard Model, using offshell currents instead of Feynman diagrams as basic building blocks.
Recursive generation of one-loop amplitudes in the Standard Model
TL;DR: Recola as discussed by the authors is a tensor-integral library for the recursive generation of tree-level and one-loop amplitudes in the Standard Model, using off-shell currents as basic building blocks.
•Posted Content
NNLO Computational Techniques: the Cases H → and H → gg ‡‡
Stefano Actis,Giampiero Passarino,Christian Sturm,Sandro Uccirati +3 more
- 01 Jan 2008
TL;DR: In this article, a large set of techniques needed to compute decay rates at the two-loop level are derived and systematized, and the main emphasis of the paper is on the two Standard Model decays H → γγ and H → gg.
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Fermionic NNLO contributions to Bhabha scattering
Stefano Actis,Janusz Gluza,Michal Czakon,Tord Riemann +3 more
- 26 Oct 2007
TL;DR: In this article, the two-loop corrections to Bhabha scattering from heavy fermions using dispersion relations are derived using three kernel functions, and numerical results for small electron mass m_e, combined with arbitrary values of the fermion mass m _f in the loop, with or without hadronic insertions are presented.