The members of the Torino group have particular expertise
in the area of precision tests of the Standard Model
and beyond for LEP 1, LEP 2 and for the new hadron (LHC) and
electron -- positron colliders (LC). Fields of research are:
the analysis of LEP/SLD results around the Z-resonance with the continuous
development of the FORTRAN code TOPAZ0;
definition of line-shape and asymmetry pseudo - observables, together
with the residual Standard Model dependence in model-independent fits;
e+e- annihilation into four fermions (WPHACT and WTO) and
six fermions (SIXPHACT) at LEP 2 and beyond, with particular emphasis to
the properties of the W vector boson, the Higgs boson, initial and final state
QED and QCD radiation, gauge invariance and one-loop corrections;
accurate predictions for Bhabha scattering for luminometry at e+e-
colliders;
top production and decay processes at hadron colliders;
top pairs production in the continuum, WWZ production with direct
investigation of triple and quartic gauge couplings and intermediate mass
Higgs production at Linear Collider;
fast modular massless and massive amplitude computations;
analysis of LEP 2 fermion-pair measurements, estimate of the theoretical
cross-sections and their precision;
inclusion of pt in the initial state QED radiation for e+e-
annihilation into four fermions;
complete gauge invariant treatment of single W production at LEP 2;
evaluation of one-loop radiative corrections for four fermion production
at e+e- colliders;
construction of a NLO Monte Carlo generator, up to six jets final states, for
LHC studies;
upgrading of the algorithms for scalar reduction in one-loop radiative
corrections.
Algebraic-Numerical evaluation of multi-loop Feynman diagrams
Furthermore, the members of the Torino group take part in a INFN
project, TO23, with the following goals:
Strong and electro-weak phenomenology at present and future high
energy colliders with the methods of perturbative field theory.
Two fermion events at electron-positron colliders at LEP1/LEP2:
ISR/FSR interference effects and theoretical systematic errors for
experimentally interesting quantities.
Four fermion (+ gamma) processes at LEP2 and at higher energies:
radiative corrections, gauge invariance, mass
effects, gamma gamma and single W processes.
Two-four fermion connection.
Top, Higgs, WWZ and quartic couplings at Linear Collider via
complete six fermion calculations.
Advanced tecniques for computing NNLO perturbative QCD processes
and their applications to phenomenological studies.
Evolution of unpolarized and polarized parton distributions with
partial Mellin transforms and phenomenological applications.
Re-summations in QCD production rates to all orders in the strong
coupling constant and power corrections to factorization theorems in QCD.