Speaker
Francesco Tramontano
(CERN)
Description
With the beginning of the experimental programs at the LHC, the need of
describing multi particle scattering events with high accuracy becomes
more pressing. On the theoretical side, perturbative calculation within
leading order precision cannot be sufficient, therefore accounting for
effects due to Next-to-Leading Order (NLO) corrections becomes mandatory.
In the last few years we observed a tremendous progress in the computation
of one-loop virtual corrections for processes involving many particles.
The new ideas based on the universal four-dimensional decomposition for
the numerator of the integrand for any one-loop scattering amplitudes,
the four-dimensional unitarity-cuts, and unitarity-cuts in $d$-dimension,
yielding the complete determination of dimensionally regulated one-loop
amplitudes, give the possibility to develop automated multi-process
evaluators for scattering amplitudes at NLO.
Primary author
Francesco Tramontano
(CERN)
Peer reviewing
Paper
Paper files:
