Results 21 to 30 of about 41,842 (275)
Revised Uncertainties in Big Bang Nucleosynthesis [PDF]
International Journal of Modern Physics E, 2017 Big Bang Nucleosynthesis (BBN) explores the first few minutes of nuclei formation after the Big Bang. We present updates that result in new constraints at the 2{\sigma} level for the abundances of the four primary light nuclides - D,3He,4He, and 7Li - in
Foley, Michael +3 more
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Low-energy photodisintegration of the deuteron and Big-Bang nucleosynthesis [PDF]
, 2003 The photon analyzing power for the photodisintegration of the deuteron was measured for seven gamma-ray energies between 2.39 and 4.05 MeV using the linearly polarized gamma-ray beam of the High-Intensity Gamma-ray Source at the Duke Free-Electron Laser ...
W. Tornow +9 more
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Big Bang Nucleosynthesis Calculation [PDF]
, 2002 I review standard big bang nucleosynthesis and some versions of nonstandard BBN. The abundances of the primordial isotopes D, He-3, and Li-7 produced in standard BBN can be calculated as a function of the baryon density with an accuracy of about 10%. For He-4 the accuracy is better than 1%. The calculated abundances agree fairly well with observations,
H. Kurki‐Suonio
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The Deuteron Confronts Big Bang Nucleosynthesis [PDF]
Nuclear Physics B - Proceedings Supplements, 1996 Recent determinations of the deuterium abundance, $^2$H/H, in high redshift Lyman limit hydrogen clouds challenge the usual picture of primordial nucleosynthesis based on \lq\lq concordance\rq\rq\ of the calculated light element ($^2$H, $^3$He, $^4$He, $^
Alcock +35 more
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Big Bang Nucleosynthesis [PDF]
Proceedings of International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos - IX — PoS(NIC-IX), 2021 A. Coc
semanticscholar +4 more sources
Big Bang Nucleosynthesis and Related Observations [PDF]
, 2000 The current status of big bang nucleosynthesis is summarized. Particular attention is paid to recent observations of He4 and Li7 and their systematic uncertainties. Be and B are also discussed in connection to recent Li7 observations and the primordial Li7 abundance.
Keith A. Olive
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Neutron diffusion and nucleosynthesis in an inhomogeneous big bang model [PDF]
, 2005 This article presents an original code for Big Bang Nucleosynthesis in a baryon inhomogeneous model of the universe. In this code neutron diffusion between high and low baryon density regions is calculated simultaneously with the nuclear reactions and ...
J. F. Lara
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Unveiling the dynamics of little-bang nucleosynthesis [PDF]
Nat CommunHigh energy nuclear collisions produce light (anti-)nuclei from the quark-gluon plasma via little-bang nucleosynthesis. Here the authors study the microscopic dynamics of little-bang nucleosynthesis producing deuterons and tritons.
Kai-Jia Sun +4 more
semanticscholar +2 more sources
Big bang nucleosynthesis in the new cosmology [PDF]
AIP Conference Proceedings, 2006 Big bang nucleosynthesis (BBN) describes the production of the lightest elements in the first minutes of cosmic time. We review the physics of cosmological element production, and the observations of the primordial element abundances. The comparison between theory and observation has heretofore provided our earliest probe of the universe, and given the
Brian D. Fields
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Precision big bang nucleosynthesis with improved Helium-4 predictions [PDF]
Physics Reports, 2018 C. Pitrou, A. Coc, J. Uzan, E. Vangioni
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