Effect of the neutron lifetime on processes in the early universe
| Autor: | A. V. Chechkin, S. V. Bobashev, A. P. Serebrov, A. V. Ivanchik |
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| Rok vydání: | 2016 |
| Předmět: |
Physics
Physics and Astronomy (miscellaneous) 010308 nuclear & particles physics media_common.quotation_subject Astrophysics 01 natural sciences Universe Abundance of the chemical elements Nuclear physics Big Bang nucleosynthesis Abundance (ecology) 0103 physical sciences Neutron 010303 astronomy & astrophysics media_common |
| Zdroj: | Technical Physics. 61:1101-1105 |
| ISSN: | 1090-6525 1063-7842 |
| DOI: | 10.1134/s1063784216070069 |
| Popis: | The influence of the neutron lifetime on the abundance of light elements produced during the primordial nucleosynthesis early in the birth of the Universe is considered. Among light elements, namely, D, 3He, 4He, and 7Li, 4He proves to be most sensitive to neutron lifetime τn. Astronomic data on the light element abundance also provide the best accuracy for 4He. The solution of a number of problems discussed in this paper requires improving the accuracy of observations for the 4He abundance and refining the value of τn. |
| Databáze: | OpenAIRE |
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