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Effect of the neutron lifetime on processes in the early universe

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Abstract

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 τ n . 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 τ n .

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Authors and Affiliations

  1. Peter the Great St. Petersburg Polytechnic University, Politekhnicheskaya ul. 29, St. Petersburg, 195251, Russia

    A. V. Chechkin, A. V. Ivanchik & S. V. Bobashev

  2. Petersburg Nuclear Physics Institute, Gatchina, Leningrad oblast, St. Petersburg, 188300, Russia

    A. V. Chechkin & A. P. Serebrov

  3. Ioffe Physical-Technical Institute, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia

    A. V. Ivanchik & S. V. Bobashev

Authors
  1. A. V. Chechkin
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  2. A. V. Ivanchik
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  3. A. P. Serebrov
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  4. S. V. Bobashev
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Correspondence to A. V. Chechkin.

Additional information

Original Russian Text © A.V. Chechkin, A.V. Ivanchik, A.P. Serebrov, S.V. Bobashev, 2016, published in Zhurnal Tekhnicheskoi Fiziki, 2016, Vol. 86, No. 7, pp. 140–144.

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Chechkin, A.V., Ivanchik, A.V., Serebrov, A.P. et al. Effect of the neutron lifetime on processes in the early universe. Tech. Phys. 61, 1101–1105 (2016). https://doi.org/10.1134/S1063784216070069

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  • DOI: https://doi.org/10.1134/S1063784216070069

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