Speaker
Description
The Higgs boson plays a fundamental role in the Standard Model (SM) of particles, one of them, is to unitarize the elastic scattering of the gauge bosons at tree level. Additionally, this analysis impose an upper bound on the Higgs Mass. Despite the extraordinary experimental success, which culminate in the discovery of the Higgs boson in 2012, the SM cannot explain the astrophysical and cosmological evidence of the Dark Matter in our universe.
Given that the spin of the DM candidate is not constrained, some spin-1 DM Models have been proposed. However, introducing massive vector fields, which are not gauge fields, irredeemably induce violations of perturbative unitarity in scattering processes involving these spin-1 particles bosons. This issue manifests itself as scattering amplitudes that do not decrease sufficiently fast with increasing $s = E^2
_{CM}$. In this talk, I will discuss the constrains in the parameter space induced by unitarity violation in models of vector DM, where the vector fields are multiplets of $SU(2)_L$. In particular, I will analyze the approximation of the vector polarization at high energies and the scattering process involved in each model.
