Speaker
Description
Little Higgs models - which can most easily be thought of as a variant of
composite Higgs models - explain a light Higgs boson at 125 GeV as an
pseudo-Nambu-Goldstone boson of a spontaneously broken global symmetry.
The mechanism of collective symmetry breaking shifts the UV scale of
these models to the 10 TeV scale and higher. T-parity is introduced as
a discrete symmetry to remove tree-level constraints on the electroweak
precision data. Still after run 1 of LHC, electroweak precision observables
gave stronger constraints than Higgs data and direct searches. We present
a full recast of all available 13 TeV searches from LHC run 2 to show that
now direct searches supersede electroweak porecision observables. The latest
exclusion limits on the LHT model will be presented, as well as an outlook
on the full high-luminosity phase of LHC.
