Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Estimating reaction rates and uncertainties for primordial
  nucleosynthesis   We present a Monte Carlo method for direct incorporation of nuclear inputs in
primordial nucleosynthesis calculations. This method is intended to remedy
shortcomings of current error estimation, by eliminating intermediate data
evaluations and working directly with experimental data, allowing error
estimation based solely on published experimental uncertainties. This technique
also allows simple incorporation of new data and reduction of errors with the
introduction of more precise data. Application of our method indicates that
previous error estimates on the calculated abundances were too large by as much
as a factor of three. Since uncertainties in the BBN calculation currently
dominate inferences drawn from light-element abundances, the re-estimated
errors have important consequences for cosmic baryon density, neutrino physics,
and lithium depletion in halo stars. Our direct method allows detailed
discussion of the status of the nuclear inputs, by identifying clearly the
places where improved cross section measurements would be most useful.

37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an