996 citations · 1.5k across the 7 of their papers we have counts for
7 papers
The LBT Project V: Cosmological Implications of a New Determination of Primordial He
Tsung-Han Yeh, Keith A. Olive, Brian D. Fields +5
The primordial abundance of He plays a central role in big-bang nucleosynthesis (BBN) and in the cosmic microwave background (CMB). The LBT Project's new measuremen…
The LBT Project I: An Improved Determination of the Primordial Helium Abundance -- Project Description, Sample Selection, Observations, and Methodology
Evan D. Skillman, Richard W. Pogge, Erik Aver +9
Extremely low metallicity HII regions have been observed with the goal of determining the primordial helium abundance (). , combined with standard big bang nu…
Limits on Non-Relativistic Matter During Big-Bang Nucleosynthesis
Tsung-Han Yeh, Keith A. Olive, Brian D. Fields
Big-bang nucleosynthesis (BBN) probes the cosmic mass-energy density at temperatures MeV to keV. Here, we consider the effect of a cosmic matter-like species t…
The Neutron Mean Life and Big Bang Nucleosynthesis
Tsung-Han Yeh, Keith A. Olive, Brian D. Fields
We explore the effect of neutron lifetime and its uncertainty on standard big-bang nucleosynthesis (BBN). BBN describes the cosmic production of the light nuclides , ${\…
The Impact of New d(p,γ)He3 Rates on Big Bang Nucleosynthesis
Tsung-Han Yeh, Keith A. Olive, Brian D. Fields
We consider the effect on Big Bang Nucleosynthesis (BBN) of new measurements of the He cross section by the LUNA Collaboration. These have an important effect on the pr…
Big-Bang Nucleosynthesis After Planck
Brian D. Fields, Keith A. Olive, Tsung-Han Yeh +1
We assess the status of big-bang nucleosynthesis (BBN) in light of the final Planck data release and other recent developments, and in anticipation of future measurements. Planck d…
Big Bang Nucleosynthesis: 2015
Richard H. Cyburt, Brian D. Fields, Keith A. Olive +1
Big-bang nucleosynthesis (BBN) describes the production of the lightest nuclides via a dynamic interplay among the four fundamental forces during the first seconds of cosmic time.…