Probing quadruplet scalar dark matter at current and future $pp$ colliders

TL;DR

This paper explores a novel inert quadruplet scalar dark matter model, analyzing its collider signatures at current LHC and future 100 TeV colliders, and deriving constraints and sensitivities through simulations.

Contribution

It introduces a new scalar quadruplet dark matter model and assesses its detectability at colliders, including current LHC constraints and future collider prospects.

Findings

Current LHC searches constrain the model parameters.

Future 100 TeV collider significantly improves detection sensitivity.

The model predicts distinctive collider signatures like monojet and soft-leptons plus jets.

Abstract

We investigate a dark matter model involving an inert $\mathrm{SU}(2)_\mathrm{L}$ quadruplet scalar with hypercharge 1/2. After the electroweak symmetry breaking, the dark sector contains one doubly charged, two singly charged, and two neutral scalars. The lighter neutral scalar can be a viable dark matter candidate. Electroweak production of these scalars at the Large Hadron Collider leads to potential signals in the $\text{monojet} + /\!\!\!\!E_\mathrm{T}$ and $\text{soft-leptons} + \text{jets} + /\!\!\!\!E_\mathrm{T}$ channels. We thus derive constraints on the model by reinterpreting recent experimental searches. Based on simulation, we further evaluate the sensitivity at a future 100 TeV $pp$ collider.