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Physical Review D
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Physical Review D
Article . 1996 . Peer-reviewed
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https://dx.doi.org/10.48550/ar...
Article . 1996
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No crisis for big bang nucleosynthesis

Authors: Kernan, P; Sarkar, S;

No crisis for big bang nucleosynthesis

Abstract

Contrary to a recent claim, the inferred primordial abundances of the light elements are quite consistent with the expectations from standard big bang nucleosynthesis when attention is restricted to direct observations rather than results from chemical evolution models. The number of light neutrino (or equivalent particle) species ($N_��$) can be as high as 4.53 if the nucleon-to-photon ratio ($��$) is at its lower limit of $1.65 \times 10^{-10}$, as constrained by the upper bound on the deuterium abundance in high redshift quasar absorption systems. Alternatively, with $N_��= 3$, $��$ can be as high as $8.90 \times 10^{-10}$ if the deuterium abundance is bounded from below by its interstellar value.

10 pages LaTeX (uses ReVTeX), including 3 PostScript figures (uses epsf); Full paper available from ftp://ftp.physics.ox.ac.uk/pub/local/users/sarkar/BBNcrisisnot.ps.gz ; Revised to include discussion of new deuterium observations in quasar absorption systems and helium-3 measurement in local interstellar gas, updated Fig 1, no change in conclusions, resubmitted to Phys. Rev. Lett

Keywords

Nuclear Theory (nucl-th), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Nuclear Theory, Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
41
Average
Top 10%
Top 10%
Green
bronze