Unitarity and Higher-Order Corrections in Neutralino Dark Matter Annihilation into Two Photons

Abstract

The neutralino pair annihilation into two photons in our galactic halo gives a robust dark matter signal, since it would give a quasi-monotonic gamma ray. This process is radiatively-induced, and the full-one loop calculation was done previously. However, for the heavy wino-like or Higgsino-like neutralino, the one-loop cross section violates unitarity, therefore the higher-order corrections may be important. We construct a non-relativistic theory for chargino and neutralino two-body states, and estimate all-order QED corrections and two-loop corrections by $Z$ and/or $W$ exchange. We find that the critical mass, above that the two-loop contribution is larger than one-loop one, is about 8 TeV (O(10) TeV) in the limit where neutralino is wino (Higgsino)-like, respectively. Around and above the critical mass, the all-order Z and/or W exchange must be included to estimate the cross section. On the other hand, the QED corrections depend on the mass difference between the neutralino and chargino. In the wino-like limit where neutralino is highly degenerate with chargino in mass, we find that QED corrections enhance the pair annihilation cross section by 1.5-2.

21pages, 5figures. The error in the Higgsino-like LSP is corrected, and a figure is changed as the result

Cited by in corpus (126)

• Dark Matter Candidates from Particle Physics and Methods of Detection
• Dark Matter Self-interactions and Small Scale Structure
• Minimal Dark Matter
• DarkSUSY: Computing Supersymmetric Dark Matter Properties Numerically
• Cosmology and Astrophysics of Minimal Dark Matter
• WIMP dark matter candidates and searches - current status and future prospects
• Non-Perturbative Effect on Dark Matter Annihilation and Gamma Ray Signature from Galactic Center
• Explosive Dark Matter Annihilation
• Hidden Charged Dark Matter
• Halo Shape and Relic Density Exclusions of Sommerfeld-Enhanced Dark Matter Explanations of Cosmic Ray Excesses
• Sommerfeld Enhancements for Thermal Relic Dark Matter
• Turning off the Lights: How Dark is Dark Matter?
• Scalar Multiplet Dark Matter
• Heavy Dark Matter Through the Higgs Portal
• WIMPonium and Boost Factors for Indirect Dark Matter Detection
• Wino Dark Matter Under Siege
• Minimal Dark Matter predictions for galactic positrons, anti-protons, photons
• Bound-state formation for thermal relic dark matter and unitarity
• Heavy Wino-like Neutralino Dark Matter Annihilation into Antiparticles
• Dark Matter Candidates
• Relic densities including Sommerfeld enhancements in the MSSM
• TeV gamma-rays and the largest masses and annihilation cross sections of neutralino dark matter
• Global fits of GUT-scale SUSY models with GAMBIT
• Dark-matter bound states from Feynman diagrams
• Antiprotons from dark matter annihilation in the Galaxy: astrophysical uncertainties
• Using the CMB angular power spectrum to study Dark Matter-photon interactions
• A global fit of the MSSM with GAMBIT
• Minimal Mirror Twin Higgs
• Looking for the WIMP Next Door
• Towards the Final Word on Neutralino Dark Matter
• Direct Detection of the Wino- and Higgsino-like Neutralino Dark Matters at One-Loop Level
• Lyman-$\alpha$ constraints on freeze-in and superWIMPs
• Self-consistent Calculation of the Sommerfeld Enhancement
• The one-loop and Sommerfeld electroweak corrections to the Wino dark matter annihilation
• Homeopathic Dark Matter, or how diluted heavy substances produce high energy cosmic rays
• Prospects for dark matter searches in the pMSSM
• Dark matter and sub-GeV hidden U(1) in GMSB models
• Thermal decoupling and the smallest subhalo mass in dark matter models with Sommerfeld-enhanced annihilation rates
• Self-annihilation of the neutralino dark matter into two photons or a Z and a photon in the MSSM
• Asymmetric thermal-relic dark matter: Sommerfeld-enhanced freeze-out, annihilation signals and unitarity bounds
• Dark matter monopoles, vectors and photons
• Soft Collinear Effective Theory for Heavy WIMP Annihilation
• Gamma-rays from Heavy Minimal Dark Matter
• Dark matter annihilations into two light fermions and one gauge boson: general analysis and antiproton constraints
• Probing the Inert Doublet Dark Matter Model with Cherenkov Telescopes
• The Sommerfeld enhancement for scalar particles and application to sfermion co-annihilation regions
• DRAKE: Dark matter Relic Abundance beyond Kinetic Equilibrium
• Resummed Photon Spectra for WIMP Annihilation
• Substructure Boosts to Dark Matter Annihilation from Sommerfeld Enhancement
• The discreet charm of higgsino dark matter - a pocket review
• Sommerfeld-Enhanced $J$-Factors For Dwarf Spheroidal Galaxies
• Dark Matter Indirect Signatures
• Looking for a Heavy Higgsino LSP in Collider and Dark Matter Experiments
• Synchrotron Radiation from the Galactic Center in Decaying Dark Matter Scenario
• Dark Matter Detection in Focus Point Supersymmetry
• Strongly first order phase transition in the singlet fermionic dark matter model after LUX
• Higgs Enhancement for the Dark Matter Relic Density
• Relic density of Dark Matter in the Inert Doublet Model beyond Leading Order. I) The Heavy Mass Case
• 130 GeV Fermi gamma-ray line from dark matter decay
• Charged Planckian Interacting Dark Matter
• Sommerfeld enhancements with vector, scalar and pseudoscalar force-carriers
• Dark Matter Velocity Spectroscopy
• Dark Matter bound-state formation at higher order: a non-equilibrium quantum field theory approach
• Universal Two-body Physics in Dark Matter near an S-wave Resonance
• Prospects for discovering a neutrino line induced by dark matter annihilation
• Higgs-mediated bound states in dark-matter models
• Mixed Inert Scalar Triplet Dark Matter, Radiative Neutrino Masses and Leptogenesis
• Indirect and direct detection prospect for TeV dark matter in the MSSM-9
• Electroweak two-loop contribution to the mass splitting within a new heavy SU(2)${}_L$ fermion multiplet
• Maximally self-interacting dark matter: models and predictions
• Enhancement of dark matter relic density from the late time dark matter conversions
• The 130 GeV gamma-ray line and Sommerfeld enhancements
• Neutralino Dark Matter from MSSM Flat Directions in light of WMAP Result
• A model of electroweakly interacting non-abelian vector dark matter
• Light mediators in dark matter direct detections
• Dark Matter Bound State Formation in Fermionic $Z_2$ DM model with Light Dark Photon and Dark Higgs Boson
• Effective Interaction of Electroweak-Interacting Dark Matter with Higgs Boson and Its Phenomenology
• The Dark Side of 4321
• Zero-Range Effective Field Theory for Resonant Wino Dark Matter II. Coulomb Resummation
• Singlet-Triplet Fermionic Dark Matter and LHC Phenomenology
• Zero-Range Effective Field Theory for Resonant Wino Dark Matter I. Framework
• Impact of Sommerfeld Effect and Bound State Formation in Simplified $t$-Channel Dark Matter Models
• Non-thermal Production of Minimal Dark Matter via Right-handed Neutrino Decay
• Chiral Dark Sector
• Zero-Range Effective Field Theory for Resonant Wino Dark Matter III. Annihilation Effects
• Leak-in Dark Matter
• Long-range self-interacting dark matter in the Sun
• Implications of Two-component Dark Matter Induced by Forbidden Channels and Thermal Freeze-out
• Saha equilibrium for metastable bound states and dark matter freeze-out
• Indirect searches for dark matter bound state formation and level transitions
• Relic density of dark matter in the inert doublet model beyond leading order for the low mass region: 1. Renormalisation and constraints
• Dark Matter "Transporting" Mechanism Explaining Positron Excesses
• Annihilations of superheavy dark matter in superdense clumps
• Non-relativistic and potential non-relativistic effective field theories for scalar mediators
• The Sommerfeld Enhancement in the Scotogenic Model with Large Electroweak Scalar Multiplets
• Direct detection of pseudo-Nambu-Goldstone dark matter with light mediator
• Probing a light dark sector at future lepton colliders via invisible decays of the SM-like and dark Higgs bosons
• Composite Dark Matter with Forbidden Annihilation
• Higgsino dark matter model consistent with galactic cosmic ray data and possibility of discovery at LHC-7
• Bound states of WIMP dark matter in Higgs-portal models. Part I. Cross-sections and transition rates
• Relic density calculations beyond tree-level, exact calculations versus effective couplings: the ZZ final state
• Thermal abundance of non-relativistic relics with Sommerfeld enhancement
• The Role of Electroweak Corrections for the Dark Matter Relic Abundance
• Neutralino-neutralino annihilation to photon and gluon pairs in MSSM models
• Anatomy of singlet-doublet dark matter relic: annihilation, co-annihilation, co-scattering, and freeze-in
• Unitarity in the non-relativistic regime and implications for dark matter
• Semi-annihilating dark matter coupled with Majorons
• Quantum Theory of Dark Matter Scattering
• Consistent explanation for the cosmic-ray positron excess in $p$-wave Breit-Wigner enhanced dark matter annihilation
• Electroweak interacting dark matter with a singlet scalar portal
• Multi-Sommerfeld enhancement in dark sector
• Calculations of the Sommerfeld Effect in a Unified Wave Function Framework
• Smallest Halos in Thermal Wino Dark Matter
• The Quantum Mechanics Swampland
• Direct detection of dark matter with resonant annihilation
• Dark matter conversion as a source of boost factor for explaining the cosmic ray positron and electron excesses
• Current status of the light neutralino thermal dark matter in the phenomenological MSSM
• Prospects of Indirect Detection for the Heavy S3 Dark Doublet
• Gamma rays from Dark Matter Annihilation in Three-loop Radiative Neutrino Mass Generation Models
• Universal bound states and resonances with Coulomb plus short-range potentials
• Electroweak Dark Matter
• Consistent explanation for the cosmic-ray positron excess in p-wave Sommerfeld-enhanced dark matter annihilation
• Two-component asymmetric dark matter via bound states and freeze-in decay
• Gamma-ray line from electroweakly interacting non-abelian spin-1 dark matter
• Non-perturbative Enhancement of Heavy Quark-Antiquark Pair Annihilation in the Quark-Gluon Plasma
• Effective field theory for resonant wino dark matter