Revisiting Big-Bang Nucleosynthesis Constraints on Dark-Matter Annihilation

Abstract

We study the effects of dark-matter annihilation during the epoch of big-bang nucleosynthesis on the primordial abundances of light elements. We improve the calculation of the light-element abundances by taking into account the effects of anti-nucleons emitted by the annihilation of dark matter and the interconversion reactions of neutron and proton at inelastic scatterings of energetic nucleons. Comparing the theoretical prediction of the primordial light-element abundances with the latest observational constraints, we derive upper bounds on the dark-matter pair-annihilation cross section. Implication to some of particle-physics models are also discussed.

10 pages, 2 figures

References in corpus (11)

• An Introduction to PYTHIA 8.2
• Non-perturbative Effect on Thermal Relic Abundance of Dark Matter
• Big-Bang Nucleosynthesis and Gravitino
• The effects of He I 10830 on helium abundance determinations
• Possible Evidence For Dark Matter Annihilation In The Inner Milky Way From The Fermi Gamma Ray Space Telescope
• BBN And The CMB Constrain Neutrino Coupled Light WIMPs
• Search for disappearing tracks in proton-proton collisions at sqrt(s) = 8 TeV
• Wino Dark Matter in light of the AMS-02 2015 Data
• Implications for dark matter annihilation from the AMS-02 $\bar{p}/p$ ratio
• Constraints on Light Dark Matter from Big Bang Nucleosynthesis
• AMS-02 Antiprotons from Annihilating or Decaying Dark Matter

Cited by in corpus (38)

• Revisiting Big-Bang Nucleosynthesis Constraints on Long-Lived Decaying Particles
• BBN constraints on the annihilation of MeV-scale dark matter
• Status, Challenges and Directions in Indirect Dark Matter Searches
• WIMP Dark Matter in a Well-Tempered Regime: A case study on Singlet-Doublets Fermionic WIMP
• Limits from BBN on Light Electromagnetic Decays
• Dark Matter and Neutrino Mass from the Smallest Non-Abelian Chiral Dark Sector
• Interplay of the LHC and non-LHC Dark Matter searches in the Effective Field Theory approach
• Hidden sector explanation of $B$-decay and cosmic ray anomalies
• Resonance enhancement of dark matter interactions: the case for early kinetic decoupling and velocity dependent resonance width
• Self-interacting dark matter without prejudice
• Revisiting CMB constraints on dark matter annihilation
• CMB Constraint on Dark Matter Annihilation after Planck 2015
• Light Chiral Dark Sector
• Supernova Constraint on Self-Interacting Dark Sector Particles
• Constraint on the velocity dependent dark matter annihilation cross section from gamma-ray and kinematic observations of ultrafaint dwarf galaxies
• Electron-Positron Annihilation Freeze-Out in the Early Universe
• Towards a full description of MeV dark matter decoupling: a self-consistent determination of relic abundance and $N_{\mathrm{eff}}$
• A dark matter model that reconciles tensions between the cosmic-ray $e^{\pm }$ excess and the gamma-ray and CMB constraints
• Dark Matter Candidates and Searches
• Implications of Two-component Dark Matter Induced by Forbidden Channels and Thermal Freeze-out
• Cosmological Bounds on sub-GeV Dark Vector Bosons from Electromagnetic Energy Injection
• Higgsino Dark Matter in a Non-Standard History of the Universe
• Impacts of new small-scale N-body simulations on dark matter annihilations constrained from cosmological 21cm line observations
• Manifesting hidden dynamics of a sub-component dark matter
• MeV to multi-TeV thermal WIMPs: most conservative limits
• The binding of cosmological structures by massless topological defects
• SUSY's Ladder: Reframing Sequestering at Large Volume
• Dark Matter from Dark Glueball Dominance
• Cosmological Problems of the String Axion Alleviated by High Scale SUSY of $m_{3/2}$ $\simeq$ 10-100 TeV
• Reconstructing the early-universe expansion and thermal history
• BBN Photodisintegration Constraints on Gravitationally Produced Vector Bosons
• Feebly-interacting dark matter
• Bottom-Tau Unification in Supersymmetric Model with Anomaly-Mediation
• Supersymmetric $\nu$-Inflaton Dark Matter
• Revisiting big bang nucleosynthesis with a new particle species : effect of co-annihilation with nucleons
• New Limits on Light Dark Matter-Nucleon Scattering
• Flavor Symmetry and Proton Decay in PeV-Scale Supersymmetry
• Big-bang nucleosynthesis constraints on dark-matter sectors revisited