LHC-friendly freeze-in dark matter via Higgs portal

Abstract

It is known that single-field freeze-in dark matter barely leaves footprints in dark matter direct detection and collider experiments. This situation can be altered in two-field context. In this work we propose a two-field freeze-in dark matter model through Higgs portal. The observed dark matter relic abundance is obtained by a decay of scalar mediator thermalized in the early Universe. While there is a lack of direct dark matter signals, the scalar mediator is in the reach of HL-LHC either through vector boson fusion or Mono-Z channel. Within allowed scalar mass window of 10-50 GeV, we use improved cuts to derive both $2\sigma$ exclusion and $5\sigma$ discovery limits, depending on the value of Higgs portal coupling. If verified, this scalar mediator signal allows us to infer the freeze-in dark matter.

v3: Published version with new materials added

References in corpus (22)

• PYTHIA 6.4 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Gauge Singlet Scalars as Cold Dark Matter
• First Dark Matter Search Results from the LUX-ZEPLIN (LZ) Experiment
• MadAnalysis 5, a user-friendly framework for collider phenomenology
• Dark Matter Search Results from the PandaX-4T Commissioning Run
• Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes
• Search for new phenomena in events with an energetic jet and missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• micrOMEGAs 6.0: N-component dark matter
• Combination of searches for invisible decays of the Higgs boson using 139 fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV collected with the ATLAS experiment
• SENSEI: First Direct-Detection Results on sub-GeV Dark Matter from SENSEI at SNOLAB
• Search for invisible Higgs-boson decays in events with vector-boson fusion signatures using 139 ${\text{fb}}^{-1}$ of proton-proton data recorded by the ATLAS experiment
• The Irreducible Axion Background
• Probing the scotogenic FIMP at the LHC
• Search for invisible decays of the Higgs boson produced via vector boson fusion in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for dark matter produced in association with a leptonically decaying Z boson in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Imprint of the seesaw mechanism on feebly interacting dark matter and the baryon asymmetry
• The Waning of the WIMP: Endgame?
• Heavy stable charged tracks as signatures of non-thermal dark matter at the LHC : a study in some non-supersymmetric scenarios
• New insights into axion freeze-in
• Constraints on freeze-in dark matter from Lyman-$\alpha$ forest and 21-cm signal : single-field models
• Lyman-$\alpha$ limit on axion-like cold dark matter