Dark Matter Signals at the LHC from a 3HDM
Diana Rojas-Ciofalo, Adriana Cordero, Jaime Hernandez-Sanchez, Venus, Keus, Stefano Moretti, Dorota Sokolowska
TL;DR
This paper investigates unique dark matter signals at the LHC within a 3-Higgs Doublet Model, focusing on cascade decays involving inert scalars and their potential observability through Higgs decay channels.
Contribution
It introduces a novel dark matter signal in the 3HDM framework involving loop-induced decays, not possible in simpler models, highlighting a distinctive experimental signature.
Findings
Loop-induced decay $H_2 o H_1 ar{f}f$ identified as a key signature.
Cascade decay $h o H_1 H_2 o H_1 H_1 ar{f}f$ can be observed at the LHC.
Signal is prominent when $H_2$ and $H_1$ are nearly degenerate.
Abstract
We analyse new signals of Dark Matter (DM) at the Large Hadron Collider (LHC) in a 3-Higgs Doublet Model (3HDM) where only one doublet acquires a Vacuum Expectation Value (VEV), preserving a parity . The other two doublets are inert and do not develop a VEV, leading to a dark scalar sector controlled by , with the lightest CP-even dark scalar being the DM candidate. This leads to the loop induced decay of the next-to-lightest scalar, (), mediated by both dark CP-odd and charged scalars. This is a smoking-gun signal of the 3HDM since it is not allowed in the 2HDM with one inert doublet and is expected to be important when and are close in mass. In practice, this signature can be observed in the cascade decay of the SM-like Higgs boson, into two DM particles and di-leptons/di-jets,…
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsParticle physics theoretical and experimental studies · Dark Matter and Cosmic Phenomena · Computational Physics and Python Applications