Low-lying Resonances and Relativistic Screening in Big Bang Nucleosynthesis

Abstract

We explore effects of the screening due to the relativistic electron-positron plasma and presence of resonances in the secondary reactions leading to A=7 nuclei during the Big Bang Nucleosynthesis. In particular, we investigate and examine possible low-lying resonances in the ${}^7$Be(${}^3$He, $\gamma$)${}^{10}$C reaction and examine the resultant destruction of ${}^7$Be for various resonance locations and strengths. While a resonance in the ${}^{10}$C compound nucleus is thought to have negligible effects we explore the possibility of an enhancement from plasma screening that may adjust the final ${}^7$Be abundance. We find the effects of relativistic screening and possible low-lying resonances to be relatively small in the standard Early Universe models.

8 pages, 13 figures, Physical Review C (2016) (in press)

References in corpus (7)

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• Primordial Nucleosynthesis: from precision cosmology to fundamental physics
• The Primordial Lithium Problem
• Standard big bang nucleosynthesis and primordial CNO Abundances after Planck
• Resonant Destruction as a Possible Solution to the Cosmological Lithium Problem
• Electron screening and its effects on Big-Bang nucleosynthesis
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• Screening corrections to Electron Capture Rates and resulting constraints on Primordial Magnetic Fields
• Dynamical Screening Effects on Big Bang Nucleosynthesis
• New Thermonuclear Rate of 7Li(d,n)24He relevant to the Cosmological Lithium Problem
• Big Bang nucleosynthesis as a probe of new physics
• Self-consistent strong screening applied to thermonuclear reactions
• Primordial Nucleosynthesis
• An Effective Field Theory Approach to the Stabilization of ${}^8$Be in a QED Plasma
• Relativistic Coulomb Screening in Pulsational Pair Instability Supernovae
• Quarks to Cosmos: Particles and Plasma in Cosmological evolution