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arXiv · 1904.06787

Improved Constraints on Sterile Neutrinos in the MeV to GeV Mass Range

D. A. Bryman·R. Shrock
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Abstract

Improved upper bounds are presented on the coupling $|U_{e4}|^2$ of an electron to a sterile neutrino $ν_4$ from analyses of data on nuclear and particle decays, including superallowed nuclear beta decays, the ratios $R^{(π)}_{e/μ}=BR(π^+ \to e^+ ν_e)/BR(π^+ \to μ^+ ν_μ)$, $R^{(K)}_{e/μ}$, $R^{(D_s)}_{e/τ}$, and $B^+_{e 2}$ decay, covering the mass range from MeV to GeV.

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D. A. Bryman, R. Shrock. 2019-04-15. Improved Constraints on Sterile Neutrinos in the MeV to GeV Mass Range. https://doi.org/10.1103/physrevd.100.053006

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