scholarly journals Constraining Sterile Neutrinos from Precision Higgs Data

2019 ◽  
Author(s):  
Arindam Das
Keyword(s):  
Sterile Neutrinos ◽  
Higgs Data

scholarly journals Constraining sterile neutrinos from precision Higgs data

2017 ◽  
Vol 95 (11) ◽  
Author(s):  
Arindam Das ◽  
P. S. Bhupal Dev ◽  
C. S. Kim
Keyword(s):  
Sterile Neutrinos ◽  
Higgs Data

New results on sterile neutrinos searches

2014 ◽  
Vol 5 (9) ◽  
pp. 773-776
Author(s):  
A. T. Shaikhiev ◽  
Yu. G. Kudenko
Keyword(s):  
Sterile Neutrinos

scholarly journals Limits on the Existence of sub-MeV Sterile Neutrinos from the Decay of Be7 in Superconducting Quantum Sensors

2021 ◽  
Vol 126 (2) ◽  
Author(s):  
S. Friedrich ◽  
G. B. Kim ◽  
C. Bray ◽  
R. Cantor ◽  
J. Dilling ◽  
...  
Keyword(s):  
Sterile Neutrinos

scholarly journals Relativistic and spectator effects in leptogenesis with heavy sterile neutrinos

2020 ◽  
Vol 2020 (2) ◽  
Author(s):  
Björn Garbrecht ◽  
Philipp Klose ◽  
Carlos Tamarit
Keyword(s):  
Sterile Neutrinos

scholarly journals Two-neutrino double beta decay with sterile neutrinos

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
Patrick D. Bolton ◽  
Frank F. Deppisch ◽  
Lukáš Gráf ◽  
Fedor Šimkovic
Keyword(s):  
Beta Decay ◽  
Double Beta Decay ◽  
Sterile Neutrinos

scholarly journals Sterile Neutrinos as Dark Matter: Alternative Production Mechanisms in the Early Universe

Universe ◽  
2021 ◽  
Vol 7 (8) ◽  
pp. 264
Author(s):  
Daniel Boyanovsky
Keyword(s):  
Dark Matter ◽  
Distribution Function ◽  
Kinetic Equation ◽  
Standard Model ◽  
Early Universe ◽  
Quantum Kinetic Equation ◽  
Sterile Neutrinos ◽  
The Standard Model ◽  
Production Mechanisms ◽  
Freeze Out

We study various production mechanisms of sterile neutrinos in the early universe beyond and within the standard model. We obtain the quantum kinetic equations for production and the distribution function of sterile-like neutrinos at freeze-out, from which we obtain free streaming lengths, equations of state and coarse grained phase space densities. In a simple extension beyond the standard model, in which neutrinos are Yukawa coupled to a Higgs-like scalar, we derive and solve the quantum kinetic equation for sterile production and analyze the freeze-out conditions and clustering properties of this dark matter constituent. We argue that in the mass basis, standard model processes that produce active neutrinos also yield sterile-like neutrinos, leading to various possible production channels. Hence, the final distribution function of sterile-like neutrinos is a result of the various kinematically allowed production processes in the early universe. As an explicit example, we consider production of light sterile neutrinos from pion decay after the QCD phase transition, obtaining the quantum kinetic equation and the distribution function at freeze-out. A sterile-like neutrino with a mass in the keV range produced by this process is a suitable warm dark matter candidate with a free-streaming length of the order of few kpc consistent with cores in dwarf galaxies.

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