We study the big-bang nucleosynthesis (BBN) with the long-lived exotic particle, called X. If
the lifetime of X is longer than∼ 0.1 sec, its decay may cause nonthermal nuclear reactions …

Very high quality spectra of 24 metal-poor halo dwarfs and subgiants have been acquired
with ESO's VLT/UVES for the purpose of determining Li isotopic abundances. The derived …

Results of a detailed examination of the cascade nucleosynthesis resulting from the putative
hadronic decay, evaporation, or annihilation of a primordial relic during the big bang …

Context. The primordial lithium abundance is a key prediction of models of big bang
nucleosynthesis, and its abundance in metal-poor dwarfs (the Spite plateau) is an important …

Context. Un-evolved, very metal-poor stars are the most important tracers of the cosmic
abundance of lithium in the early universe. Combining the standard Big Bang …

Context. We reassess the problem of the production and evolution of the light elements Li,
Be and B and of their isotopes in the Milky Way in the light of new observational and …

We consider big bang nucleosynthesis (BBN) with long-lived charged massive particles.
Before decaying, the long-lived charged particle recombines with a light element to form a …

The primordial abundances of light elements produced in the standard theory of Big Bang
nucleosynthesis (BBN) depend only on the cosmic ratio of baryons to photons, a quantity …

Since the pioneering observations of Spite & Spite in 1982, the constant lithium abundance
of metal-poor ([Fe/H]<-1.3) halo stars near the turnoff has been attributed to a cosmological …

Abstract Standard Big Bang nucleosynthesis at baryonic density as inferred from WMAP
implies a primordial 7 Li abundance factor of two to three times larger than that inferred from …