Temperature dependence of the neutron lifespan

Cheng Tao Yang, Jeremiah Birrell, Johann Rafelski

Research output: Contribution to journalArticlepeer-review


Current precision big bang nucleosynthesis (BBN) studies motivate us to revisit the neutron lifespan in the plasma medium of the early universe. The mechanism we explore is the Fermi-blocking of decay electrons and neutrinos by plasma. As result, neutrons live longer and we find a significant 6.4% modification of neutron abundance in the BBN era arising from in plasma modification of the neutron lifetime. This effect can influence the final abundances of the light elements in BBN.

Original languageEnglish (US)
JournalUnknown Journal
StatePublished - May 16 2018

ASJC Scopus subject areas

  • General

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