Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Big-Bang Nucleosynthesis in comparison with observed helium and
  deuterium abundances - possibility of a non-standard model   Comparing the latest observed abundances of 4He and D, we make a ?2 analysis
to see whether it is possible to reconcile primordial nucleosynthesis using
up-to-date nuclear data of NACRE II and the mean-life of neutrons. If we adopt
the observational data of ${}^4_{}$He by Izotov et al., we find that it is
impossible to get reasonable concordance against the standard Big-Bang
nucleosynthesis. However, including degenerate neutrinos, we have succeeded in
obtaining consistent constraints between the neutrino degeneracy and the
baryon-to-photon ratio from detailed comparison of calculated abundances with
the observational data of ${}^4_{}$He and D: the baryon-to-photon ratio in
units of $10^{-10}$ is found to be in the range 6.02 < $\eta^{}_{10}$ < 6:54
for the specified parameters of neutrino degeneracy.

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The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th