Title: Naturalness: a scale-invariant alternative

Speaker: Prof. Archil Kobakhidze (U. of Sydney)

Time: 2:30PM, June 18th (Thursday)

Place: Theoretical Physics Division，319

Abstract: The discovery of the 125 GeV Higgs boson with properties consistent with elementary scalar, together with non-observation of any sign of new physics at the LHC so far, makes a critical reassessment of the naturalness paradigm paramount. The speaker will discus to what extent classical scale invariance can be thought as a symmetry responsible for a technically natural solution to the problem of radiative stability of the electroweak scale and illustrate with some simple scale invariant models of electroweak symmetry breaking (EWSB)