APEC Seminar (Astronomy - Particle Physics - Experimental Physics - Cosmology)

Speaker: Michele Frigerio (CNRS)
Title: Non-perturbative analysis of the spectrum of meson resonances in an ultraviolet-complete composite-Higgs model
Date (JST): Wed, Mar 01, 2017, 13:30 - 14:30
Place: Seminar Room A
Abstract: I will discuss a few non-perturbative techniques, inherited from QCD, that may be useful to characterise new strongly-coupled physics at the multi-TeV scale. Specifically, I will consider a gauge theory of fermions, that confines and realizes the Higgs particle as a composite Goldstone boson.
The focus will be to determine the spectrum of meson resonances that accompany the Higgs. To this end, we approximated the hypercolour dynamics by four-fermion operators, à la Nambu-Jona Lasinio, as motivated by large-N arguments.
Models with both a Goldstone Higgs and top- quark partners actually require a two-sector gauge theory.
In this case, we have shown that the anomaly structure of the theory is qualitatively different from the QCD-like case.
I will illustrate the conditions for the various meson resonances to lie within the reach of the LHC.