Scientific Calendar Event



Starts 21 Apr 2015 16:30
Ends 21 Apr 2015 18:00
Central European Time
ICTP
Leonardo Building - Luigi Stasi Seminar Room
Abstract. The Twin Higgs mechanism helps in reducing the sensitivity of the Higgs potential to the mass of the particles introduced to address the hierarchy problem, like stops in Supersymmetry or top partners in Composite Higgs models. This sensitivity is turned into a sensitivity to the mass of particles that can be totally neutral under the SM gauge group and can therefore be substantially lighter while not being experimentally excluded. After a pedagogical introduction to the Twin Higgs scenario and to the recent development in its composite incarnation, I will discuss under which conditions a more minimal model can be constructed, based on a smaller symmetry group (SO(7)/G2). The key difference with all the previous models is that the twin partners are now charged under the SM hypercharge, making the model more visible. Moreover, to avoid charged light twin fermions, we consider Twin Symmetry to be respected only by SU(2)L gauge interactions and third generation quarks Yukawa couplings. This allows to generate a viable radiative Higgs potential. The twin QCD confines at scales higher than QCD delivering Twin Hadrons carrying electric charge which can lead to spectacular signatures at the LHC.