Augury of Darkness: The Low-Mass Dark Z' Portal

Abstract

Dirac fermion dark matter models with heavy $Z^{\prime }$ mediators are subject to stringent constraints from spin-independent direct searches and from LHC bounds, cornering them to live near the $Z^{\prime }$ resonance. Such constraints can be relaxed, however, by turning off the vector coupling to Standard Model fermions, thus weakening direct detection bounds, or by resorting to light $Z^{\prime }$ masses, below the Z pole, to escape heavy resonance searches at the LHC. In this work we investigate both cases, as well as the applicability of our findings to Majorana dark matter. We derive collider bounds for light $Z^{\prime }$ gauge bosons using the $C{L}_S$ method, spin-dependent scattering limits, as well as the spin-independent scattering rate arising from the evolution of couplings between the energy scale of the mediator mass and the nuclear energy scale, and indirect detection limits. We show that such scenarios are still rather constrained by data, and that near resonance they could accommodate the gamma-ray GeV excess in the Galactic center.

25 pages, 6 Figures. Typos corrected

References in corpus (41)

• 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
• Results from a search for dark matter in the complete LUX exposure
• Dark Matter Candidates from Particle Physics and Methods of Detection
• Searching for Dark Matter Annihilation in Recently Discovered Milky Way Satellites with Fermi-LAT
• Background model systematics for the Fermi GeV excess
• micrOMEGAs4.1: two dark matter candidates
• Search for high-mass dilepton resonances in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector
• Dark matter production in the early Universe: beyond the thermal WIMP paradigm
• Simplified Dark Matter Models for the Galactic Center Gamma-Ray Excess
• Possible Evidence For Dark Matter Annihilation In The Inner Milky Way From The Fermi Gamma Ray Space Telescope
• Gamma Ray Signals from Dark Matter: Concepts, Status and Prospects
• Explaining Dark Matter and $B$ Decay Anomalies with an $L_{\mu }-L_{\tau }$ Model
• Spin-Dependent Weakly-Interacting-Massive-Particle--Nucleon Cross Section Limits from First Data of PandaX-II Experiment
• TeV gamma-rays and the largest masses and annihilation cross sections of neutralino dark matter
• The windows for kinetically mixed Z'-mediated dark matter and the galactic center gamma ray excess
• The Effective Hooperon
• Axial Dark Matter: the case for an invisible Z'
• Dark Matter Interpretation of the Fermi-LAT Observation Toward the Galactic Center
• $Z^{\prime }$-portal right-handed neutrino dark matter in the minimal U(1)${}_X$ extended Standard Model
• Z-portal dark matter
• Phenomenology of the 3-3-1-1 model
• Connection of $g-2_{\mu }$, electroweak, dark matter, and collider constraints on 331 models
• Z' Mediated Dark Matter Models for the Galactic Center Gamma-Ray Excess
• Search for Gamma-ray Emission from Dark Matter Annihilation in the Large Magellanic Cloud with the Fermi Large Area Telescope
• R-parity as a residual gauge symmetry : probing a theory of cosmological dark matter
• Searching for dilepton resonances below the Z mass at the LHC
• Simple 3-3-1 model and implication for dark matter
• Effect of Black Holes in Local Dwarf Spheroidal Galaxies on Gamma-Ray Constraints on Dark Matter Annihilation
• Dirac dark matter and $b\to s{\ell }^{+}{\ell }^{-}$ with $\mathrm{U}(1)$ gauge symmetry
• Impact of Mass Generation for Simplified Dark Matter Models
• Investigation of Dark Matter in Minimal 3-3-1 Models
• Automated mass spectrum generation for new physics
• Isospin-violating dark matter in the light of recent data
• Scalar Dark Matter with CERN-LEP data and $Z^{\prime }$ search at the LHC in an $U(1{)}^{\prime }$ Model
• Indirect Detection of WIMP Dark Matter: a compact review
• Updated Collider and Direct Detection Constraints on Dark Matter Models for the Galactic Center Gamma-Ray Excess
• Halo-independent comparison of direct dark matter detection data: a review
• The leptophilic dark matter with $Z^{\prime }$ interaction: from indirect searches to future $e^{+}{e}^{-}$ collider searches
• Phenomenology of dark matter in chiral U(1)${}_X$ dark sector
• Higgsphobic and fermiophobic Z' as a single dark matter candidate

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