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Article Contents

ABSTRACT

1.INTRODUCTION

2.PRELIMINARIES

2.1.SBBN

2.2.Updated Nuclear Rates

2.3.First Results

3.OBSERVATIONS

3.1.Helium-4

3.2.Deuterium

3.3.Lithium

3.4.The Cosmic Microwave Background

4.THE LIKELIHOOD ANALYSIS

4.1.Monte-Carlo Predictions for the Light Elements

4.2.The Neutron Mean Life

4.3.Planck Likelihood Functions

4.4.Results: The Likelihood Functions

5.THE LITHIUM PROBLEM

6.LIMITS ON N_eff

7.DISCUSSION

APPENDIX

REFERENCES