Higgsophilic gauge bosons and monojets at the LHC

TL;DR

This paper explores how hidden gauge bosons in a model with a broken hidden gauge symmetry can produce monojet signals at the LHC, constraining the hidden sector's gauge coupling and Higgs mixing.

Contribution

It introduces a framework where hidden gauge bosons interact with the SM Higgs, analyzing LHC monojet signatures to set bounds on model parameters.

Findings

Constraints on hidden gauge coupling strength.

Limits on Higgs-hidden sector mixing.

Predictions for monojet event rates at the LHC.

Abstract

We consider a generic framework where the Standard Model (SM) coexists with a hidden sector endowed with some additional gauge symmetry. When this symmetry is broken by a scalar field charged under the hidden gauge group, the corresponding scalar boson generally mixes with the SM Higgs boson. In addition, massive hidden gauge bosons emerge and via the mixing, the observed Higgs-like mass eigenstate is the only known particle that couples to these hidden gauge bosons directly. We study the LHC monojet signatures of this scenario and the corresponding constraints on the gauge coupling of the hidden gauge group as well as the mixing of the Higgs scalars.