Big Bang nucleosynthesis as a probe of new physics

Abstract

The Big Bang Nucleosynthesis (BBN) model is a cornerstone for the understanding of the evolution of the early universe, making seminal predictions that are in outstanding agreement with the present observation of light element abundances in the universe. Perhaps, the only remaining issue to be solved by theory is the so-called "lithium abundance problem". Dedicated experimental efforts to measure the relevant nuclear cross sections used as input of the model have lead to an increased level of accuracy in the prediction of the light element primordial abundances. The rise of indirect experimental techniques during the preceding few decades has permitted the access of reaction information beyond the limitations of direct measurements. New theoretical developments have also opened a fertile ground for tests of physics beyond the standard model of atomic, nuclear, statistics, and particle physics. We review the latest contributions of our group for possible solutions of the lithium problem.

9 pages, 7 figures, version accepted for publication. Refs. 69 and 70 added upon request

References in corpus (13)

• Dark Matter Candidates from Particle Physics and Methods of Detection
• Primordial Nucleosynthesis in the Precision Cosmology Era
• The moment of truth for WIMP Dark Matter
• The 7Be(n,alpha)4He reaction and the Cosmological Lithium Problem: measurement of the cross section in a wide energy range at n_TOF (CERN)
• Improving Helium Abundance Determinations with Leo P as a Case Study
• Big Bang nucleosynthesis revisited via Trojan Horse Method measurements
• Non-extensive Statistics Solution to the Cosmological Lithium Problem
• A revised thermonuclear rate of ${}^7$Be($n$,$\alpha$)${}^4$He relevant to Big-Bang nucleosynthesis
• Extension of thermonuclear functions through the pathway model including Maxwell-Boltzmann and Tsallis distributions
• Electron screening and its effects on Big-Bang nucleosynthesis
• Nucleosynthesis Predictions and High-Precision Deuterium Measurements
• Non-detection of ${}^6$Li in Spite plateau stars with ESPRESSO
• New Thermonuclear Rate of 7Li(d,n)24He relevant to the Cosmological Lithium Problem

Cited by in corpus (1)

• Quarks to Cosmos: Particles and Plasma in Cosmological evolution