Electro not-so-weak interactions in the TeV era

by Paolo Ciafaloni (INFN - Sezione di Lecce and CERN-PH-TH)

Wednesday 28 Nov 2007, 14:00 → 15:00 Europe/Zurich

TH Theory Conference Room (CERN)

Electroweak radiative corrections at energies much higher than the weak scale feature a peculiar behavior. Virtual corrections grow with the center of mass energy of the process and are tipically in the 20-30% range at the TeV scale. Moreover, surprisingly, there is a lack of virtual and real cancellation which has been baptised "Bloch-Nordsieck violation". Contrary to what happens in QED and QCD, even observables that are fully inclusive of electroweak gauge bosons emissions are infrared sensitive: they depend on the log square of the infrared cutoff. I briefly report on results on resummations and fixed order calculations and discuss their relevance for LHC and ILC.

Slides Ciafaloni.ppt