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- Publications
- Influence

Recursive generation of one-loop amplitudes in the Standard Model

- S. Actis, A. Denner, L. Hofer, Andreas Scharf, S. Uccirati
- Physics
- 27 November 2012

A bstractWe introduce the computer code Recola for the recursive generation of tree-level and one-loop amplitudes in the Standard Model. Tree-level amplitudes are constructed using off-shell currents… Expand

NNLO computational techniques: The cases H→γγ and H→gg

- S. Actis, G. Passarino, C. Sturm, S. Uccirati
- Physics
- 23 September 2008

Abstract A large set of techniques needed to compute decay rates at the two-loop level are derived and systematized. The main emphasis of the paper is on the two Standard Model decays H → γ γ and H →… Expand

R E C O L A - REcursive Computation of One-Loop Amplitudes

- S. Actis, A. Denner, L. Hofer, J. Lang, Andreas Scharf, S. Uccirati
- Physics, Computer Science
- Comput. Phys. Commun.
- 3 May 2016

tl;dr

NLO Electroweak Corrections to Higgs Boson Production at Hadron Colliders

- S. Actis, G. Passarino, C. Sturm, S. Uccirati
- Physics
- 8 September 2008

Results for the complete NLO electroweak corrections to Standard Model Higgs production via gluon fusion are included in the total cross section for hadronic collisions. Artificially large threshold… Expand

Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data

- S. Actis, A. Arbuzov, +54 authors Working Group on Radiative Corrections and Monte Carlo Gen Energies
- Physics
- 3 December 2009

We present the achievements of the last years of the experimental and theoretical groups working on hadronic cross section measurements at the low-energy e+e− colliders in Beijing, Frascati, Ithaca,… Expand

Two-loop fermionic corrections to massive Bhabha scattering

- S. Actis, M. Czakon, J. Gluza, T. Riemann
- Physics
- 18 April 2007

Abstract We evaluate the two-loop corrections to Bhabha scattering from fermion loops in the context of pure quantum electrodynamics. The differential cross section is expressed by a small number of… Expand

Dominant NNLO corrections to four-fermion production near the W-pair production threshold

- S. Actis, M. Beneke, P. Falgari, C. Schwinn
- Physics
- 1 July 2008

Abstract We calculate the parametrically dominant next-to-next-to-leading order corrections to four-fermion production e − e + → μ − ν ¯ μ u d ¯ + X at centre-of-mass energies near the W -pair… Expand

Two-loop threshold singularities, unstable particles and complex masses

- S. Actis, G. Passarino, C. Sturm, S. Uccirati
- Physics
- 8 September 2008

The effect of threshold singularities induced by unstable particles on two-loop observables is investigated and it is shown how to cure them working in the complex-mass scheme. The impact on… Expand

Two-loop renormalization in the Standard Model. Part I: Prolegomena ☆

- S. Actis, A. Ferroglia, G. Passarino, M. Passera
- Physics
- 11 December 2006

In this paper the building blocks for the two-loop renormalization of the Standard Model are introduced with a comprehensive discussion of the special vertices induced in the Lagrangian by a… Expand

Virtual hadronic and leptonic contributions to Bhabha scattering.

- S. Actis, M. Czakon, J. Gluza, T. Riemann
- Physics, Medicine
- Physical review letters
- 24 November 2007

Using dispersion relations, we derive the complete virtual QED contributions to Bhabha scattering due to vacuum polarization effects. We apply our result to hadronic corrections and to heavy lepton… Expand