SUSY 2023

A triplet gauge boson with hypercharge one

17 Jul 2023, 18:00

20m

B100/4011

Parallel talks Higgs theory and experiment Higgs theory and experiment

Speaker

Renato Fonseca (University of Granada)

Description

A vector boson $W_1$ with the quantum numbers $(3,1)$ under the electroweak group $SU{\left(2\right)}_L\times U(1{)}_Y$ could in principle couple
with the Higgs field via the renormalizable term $W_1^{\mu \ast }H{D}_{\mu }H$. This interaction is known to affect the $T$ parameter and, in so doing, it could potentially explain the 2022 CDF measurement of the W-boson mass.

As it is often the case with vectors, building a viable model with a $W_1$ gauge boson is non-trivial. In this talk I will describe two variations of a minimal setup containing this field; they are based on an extended $SO(5)\times SU\left(2\right)\times U(1)$ electroweak group. I will nevertheless show that interactions such as $W_1^{\mu \ast }H{\partial }_{\mu }H$ are not generated in a Yang-Mills theory. A coupling between $W_1$, $H$ and another Higgs doublet $H^{\prime }$ is possible though.

Presentation materials

SUSY_2023_Renato_Fonseca.pdf