Fundamental problems with hadronic and leptonic interactions

Abstract

Common beliefs about unitarity are not reliable, and we do not know how to apply DGLAP evolution at small x. Together with the big discrepancy between the measurements of the total cross section at the Tevatron, a consequence is that the cross section at the LHC could be anywhere between 90 and 160 mb.

Comments: Presented at Epiphany meeting to commemorate Jan Kwiecinski, Krakow, January 2009