Speaker
Description
We study how the recent experimental results constrain the
gauge sectors of $U(1)$ extensions of the standard model
using a novel representation of the parameter space.
We determine the bounds on the mixing angle between the massive
gauge bosons, or equivalently, the new gauge coupling as a function of
the mass $M_{Z'}$ of the new neutral gauge boson $Z'$ in the
approximate range $(10^{-2},10^4)$\,GeV/$c^2$.
We consider the most stringent bounds obtained from direct
searches for the $Z'$. We also exhibit the allowed parameter
space by comparing the predicted and measured values of the
$\rho$ parameter and those of the mass of the $W$ boson.
Finally, we discuss the prospects of $Z'$ searches at future colliders.
The talk is based on arXiv:2402.14786.
