Solving the cosmic lithium problems with primordial late-decaying particles

Abstract

We investigate the modifications to predictions for the abundances of light elements from standard Big-Bang nucleosynthesis when exotic late-decaying particles with lifetimes exceeding ~1 sec are prominent in the early Universe. Utilising a model-independent analysis of the properties of these long-lived particles, we identify the parameter space associated with models that are consistent with all observational data and hence resolve the much discussed discrepancies between observations and theoretical predictions for the abundances of Li^7 and Li^6.

6 pages, 3 figures, submitted to Physical Review D; minor changes to references

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• Big-Bang Nucleosynthesis and Gravitino
• Heavy Dark Matter Through the Higgs Portal
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• The Physics Programme Of The MoEDAL Experiment At The LHC
• Nucleosynthesis Constraints on a Massive Gravitino in Neutralino Dark Matter Scenarios
• The cosmic 6Li and 7Li problems and BBN with long-lived charged massive particles
• Cosmic Rays from Dark Matter Annihilation and Big-Bang Nucleosynthesis
• Circumscribing Late Dark Matter Decays Model Independently
• Accidental matter at the LHC
• The number density of a charged relic
• Positron/Gamma-Ray Signatures of Dark Matter Annihilation and Big-Bang Nucleosynthesis
• Metastable GeV-scale particles as a solution to the cosmological lithium problem
• Gravitino Dark Matter and the Cosmic Lithium Abundances
• Higher D or Li: Probes of Physics beyond the Standard Model
• The New Look pMSSM with Neutralino and Gravitino LSPs
• Dark Radiation or Warm Dark Matter from long lived particle decays in the light of Planck
• Modified big bang nucleosynthesis with non-standard neutron sources
• Measuring lifetimes of long-lived charged massive particles stopped in LHC detectors
• Resonant enhancement of nuclear reactions as a possible solution to the cosmological lithium problem
• Effect of Long-lived Strongly Interacting Relic Particles on Big Bang Nucleosynthesis
• Gravitino Decays and the Cosmological Lithium Problem in Light of the LHC Higgs and Supersymmetry Searches
• General limit on the relation between abundances of D and ${}^7$Li in big bang nucleosynthesis with nucleon injections
• New Constraints on Radiative Decay of Long-Lived Particles in Big Bang Nucleosynthesis with New ${}^4$He Photodisintegration Data
• Cosmological scenario of stop NLSP with gravitino LSP and the cosmic lithium problem
• Neutron injection during primordial nucleosynthesis alleviates the primordial 7Li problem
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• Why is the Supersymmetry Breaking Scale Unnaturally High?
• Destruction of 7Be in big bang nucleosynthesis via long-lived sub-strongly interacting massive particles as a solution to the Li problem
• Big-bang nucleosynthesis with a long-lived charged massive particle including ${}^4$He spallation processes
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• Pregalactic LiBeB Production by Supernova Cosmic Rays
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• An Enhanced Cosmological Li6 Abundance as a Potential Signature of Residual Dark Matter Annihilations
• Inside the Black Box of Big Bang Nucleosynthesis: A Comprehensive Sensitivity Atlas for the Precision Era