Nuclear weak interaction rates in primordial nucleosynthesis

Abstract

We calculate the weak interaction rates of selected light nuclei during the epoch of Big Bang Nucleosynthesis (BBN), and we assess the impact of these rates on nuclear abundance flow histories and on final light element abundance yields. We consider electron and electron antineutrino captures on 3He and 7Be, and the reverse processes of positron capture and electron neutrino capture on 3H and 7Li. We also compute the rates of positron and electron neutrino capture on 6He. We calculate beta and positron decay transitions where appropriate. As expected, the final standard BBN abundance yields are little affected by addition of these weak processes, though there can be slight alterations of nuclear flow histories. However, non-standard BBN scenarios, e.g., those involving out of equilibrium particle decay with energetic final state neutrinos, may be affected by these processes.

10 pages, 6 figures

References in corpus (38)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Primordial Nucleosynthesis in the Precision Cosmology Era
• Nuclear weak-interaction processes in stars
• Sterile Neutrino Hot, Warm, and Cold Dark Matter
• Lithium isotopic abundances in metal-poor halo stars
• The cosmological baryon density from the deuterium to hydrogen ratio towards QSO absorption systems: D/H towards Q1243+3047
• Massive sterile neutrinos as warm Dark Matter
• Cosmological bounds on neutrino degeneracy improved by flavor oscillations
• Big-bang Nucleosynthesis Enters the Precision Era
• The Deuterium to Hydrogen Abundance Ratio Towards a Fourth QSO: HS0105+1619
• A probable stellar solution to the cosmological lithium discrepancy
• Dark-matter sterile neutrinos in models with a gauge singlet in the Higgs sector
• Electron capture rates on nuclei and implications for stellar core collapse
• Primordial Nucleosynthesis: Successes And Challenges
• The Primordial Abundance of He4: An Update
• The consequences of nuclear electron capture in core collapse supernovae
• Reappraising the Spite Lithium Plateau: Extremely Thin and Marginally Consistent with WMAP
• Bound-State Effects on Light-Element Abundances in Gravitino Dark Matter Scenarios
• Lithium-6: A Probe of the Early Universe
• Line shift, line asymmetry, and the 6Li/7Li isotopic ratio determination
• Estimating reaction rates and uncertainties for primordial nucleosynthesis
• Influence of light nuclei on neutrino-driven supernova outflows
• Bounds on heavy sterile neutrinos revisited
• Relic neutrino asymmetry evolution from first principles
• Heavy sterile neutrinos and supernova explosions
• Nuclear Reaction Rates and Primordial ${}^6$Li
• New Nuclear Physics for Big Bang Nucleosynthesis
• Decoherence and thermalization of a pure quantum state in quantum field theory
• Do observations prove that cosmological neutrinos are thermally distributed?
• Precision Rates for Nucleon Weak Interactions in Primordial Nucleosynthesis and He-4 Abundance
• Quantum Coherence of Relic Neutrinos
• Interplay of Non-Relativistic and Relativistic Effects in Neutrino Oscillations
• Big Bang Nucleosynthesis with Independent Neutrino Distribution Functions
• The Cosmic Microwave Background and Inflation Parameters
• Cosmic Neutrino Last Scattering Surface
• Electron capture rates for core collapse supernovae
• Weak Interaction Rate Coulomb Corrections in Big Bang Nucleosynthesis

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