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Factorization and Resummation of Small x Scaling Violations with Running Coupling
Guido Altarelli, Richard D. Ball, Stefano Forte
We discuss the inclusion of running coupling effects in perturbative small x evolution equations. We show that a running coupling BFKL-like x-evolution equation is fully compatible…
Models of neutrino masses and mixings
Guido Altarelli
We briefly review models of neutrino masses and mixings. In view of the existing experimental ambiguities many possibilities are still open. After an overview of the main alternati…
Indication for Light Sneutrinos and Gauginos from Precision Electroweak Data
G. Altarelli, F. Caravaglios, G. F. Giudice +2
The present Standard Model fit of precision data has a low confidence level, and is characterized by a few inconsistencies. We look for supersymmetric effects that could improve th…
Grand Unification in Extra Dimensions and Proton Decay
Ferruccio Feruglio
We discuss baryon and lepton violation in the context of a simple 5-dimensional grand unified model, based on the orbifold S^1/(Z_2 x Z_2'). While gauge and Higgs degrees of freedo…
Extrapolating Structure Functions to Very Small x
Guido Altarelli, Richard D. Ball, Stefano Forte
We review small contributions to perturbative evolution equations for parton distributions, and their resummation. We emphasize in particular the resummation technique recently…
SU(5) Grand Unification in Extra Dimensions and Proton Decay
Guido Altarelli, Ferruccio Feruglio
We analyse proton decay in the context of simple supersymmetric SU(5) grand unified models with an extra compact spatial dimension described by the orbifold S^1/(Z_2 x Z_2'). Gauge…