Freeze-in and Freeze-out of Dark Matter with Charged Long-lived Partners

Abstract

We present a novel framework capable of addressing the dark matter problem through freeze-in and freeze-out mechanisms, separately or together, depending on the region of the parameter space considered. In the dark matter dynamics, the model features an interplay of thermal production along with sizeable contribution through feeble decay of associated dark fermionic partner, which finally freezes out to the right relic density for a wide range of masses and couplings. Apart from the fermionic dark matter candidate, the model introduces two charged partners, one fermionic and another scalar, which often have delayed decays leading to distinct characteristics of such long-lived particles (LLP) in the colliders like the LHC. Our analysis shows that within the present scenario, LLP of decay length that could be probed at the LHC experiments are compatible with dark matter masses ranging from a few GeV to close to a TeV, as opposed to the requirement of keV-MeV dark matter in simple FIMP scenarios with LLP. In addition, the model presents hitherto unexplored interesting possibilities in the LLP searches, like (i) LLP to LLP to SM cascade decays, which could be searched for within the LHC detectors and (ii) heavy neutral particle decaying within MATHUSLA with two jets and large missing energy. A supplementary aspect of the model is the presence of a heavy neutrino facilitating Type-I seesaw mechanism without disturbing the dark matter side.

31 pages, 14 figures, 11 tables, matches version published in JCAP

References in corpus (29)

• Results from a search for dark matter in the complete LUX exposure
• Dark Matter Results From 54-Ton-Day Exposure of PandaX-II Experiment
• The Dawn of FIMP Dark Matter: A Review of Models and Constraints
• micrOMEGAs4.1: two dark matter candidates
• Stable Massive Particles at Colliders
• Dark Matter Search Results from the PICO-2L C${}_3$F${}_8$ Bubble Chamber
• Limits on spin-dependent WIMP-nucleon cross section obtained from the complete LUX exposure
• Dark Matter through the Higgs portal
• Results on MeV-scale dark matter from a gram-scale cryogenic calorimeter operated above ground
• First results from the NEWS-G direct dark matter search experiment at the LSM
• Singlet fermionic dark matter
• Search for long-lived charged particles in proton-proton collisions at sqrt(s) = 13 TeV
• The minimal model of fermionic dark matter
• Search for heavy charged long-lived particles in the ATLAS detector in 36.1 fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV
• Heavy Neutrinos in displaced vertex searches at the LHC and HL-LHC
• Probing Baryogenesis with Displaced Vertices at the LHC
• Probing the scotogenic FIMP at the LHC
• Mitigating Direct Detection Bounds in Non-minimal Higgs Portal Scalar Dark Matter Models
• Search for long-lived neutral particles in $pp$ collisions at $\sqrt{s}$ = 13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter
• Freeze-in Production of Sterile Neutrino Dark Matter in U(1)${}_{\mathrm{B}-\mathrm{L}}$ Model
• Search for long-lived particles using nonprompt jets and missing transverse momentum with proton-proton collisions at $\sqrt{s}=$ 13 TeV
• LHC Searches for Dark Matter in Compressed Mass Scenarios: Challenges in the Forward Proton Mode
• A feeble window on leptophilic dark matter
• Multi-component Dark Matter through a Radiative Higgs Portal
• Search for heavy long-lived multi-charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV using the ATLAS detector
• Heavy stable charged tracks as signatures of non-thermal dark matter at the LHC : a study in some non-supersymmetric scenarios
• MATHUSLA: A Detector Proposal to Explore the Lifetime Frontier at the HL-LHC
• Detecting hidden sector dark matter at HL-LHC and HE-LHC via long-lived stau decays
• Direct detections of Majorana dark matter in vector portal

Cited by in corpus (7)

• Feebly coupled vector boson dark matter in effective theory
• Baryogenesis and Dark Matter from Freeze-In
• Electroweak Symmetry Breaking and WIMP-FIMP Dark Matter
• Jet Timing
• Leptogenesis from a feebly interacting dark matter sector
• Gravitational SIMPs
• Dark Matter-Driven Low-Scale Leptogenesis via Neutrino Portal