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Temperature Dependence of the Neutron Lifespan

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 01 Jan 2018Embargo end date: 01 Jan 2018Publisher:arXiv

Authors: Yang, Cheng Tao; Birrell, Jeremiah; Rafelski, Johann;

doi: 10.48550/arxiv.1805.06543

arXiv: http://arxiv.org/abs/1805.06543

Temperature Dependence of the Neutron Lifespan

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Abstract

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.

4 pages, 2 figures

Keywords

Nuclear Theory (nucl-th), Plasma Physics (physics.plasm-ph), Cosmology and Nongalactic Astrophysics (astro-ph.CO), Nuclear Theory, FOS: Physical sciences, Physics - Plasma Physics, Astrophysics - Cosmology and Nongalactic Astrophysics

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