- Daniel DE FLORIAN (U. Buenos Aires)
Theoretical predictions at the LHC for processes involving many partons, for example the determination of the Higgs mass as well as possible signals of "New Physics", make the precise knowledge of scattering amplitudes necessary. The number of Feynman diagrams to calculate grows factorially with the number of external legs. Therefore, efficient techniques reducing the computing time are...
Adopting a phenomenological approach I discuss the possibility to observe new resonances in the early stage of the LHC. For simple parton luminosity reasons the gluon-gluon, quark-gluon and quark-quark production mechanisms are favored with respect to the quark-antiquark one at the LHC. I show some predictions for the production of a scalar in the gluon-gluon channel and a fermion in the...
Catani-Seymour dipole subtraction is a general and practical procedure for QCD NLO prediction. We automated it in the computer packages, AutoDipole for SM process and SuperAutoDipole for MSSM processes. The features of the packages and an application to LHC are shown.