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A Big-Bang Nucleosynthesis Limit on the Neutral Fermion Decays into Neutrinos

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arxiv 1303.2291 v2 pith:KZVKYOFE submitted 2013-03-10 astro-ph.CO nucl-th

A Big-Bang Nucleosynthesis Limit on the Neutral Fermion Decays into Neutrinos

Motohiko Kusakabe , A.B. Balantekin , Toshitaka Kajino , Y. Pehlivan This is my paper
classification astro-ph.CO nucl-th
keywords limitmagneticneutrinosnucleosynthesisproducedabundanceabundancesadditional
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Using the primordial helium abundance, an upper limit to the magnetic moments for Dirac neutrinos had been provided by imposing restrictions on the number of the additional helicity states. Considering non-thermal photons produced in the decay of the heavy sterile mass eigenstates due to the neutrino magnetic moment, we explore the constraints imposed by the observed abundances of all the light elements produced during the Big Bang nucleosynthesis.

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