Right-handed sneutrino as cold dark matter

By T. Asaka, Koji Ishiwata, T. Moroi. 2005

141 citations recorded by the source corpus.

We consider supersymmetric models with right-handed neutrinos where neutrino masses are purely Dirac-type. In this model, right-handed sneutrino can be the lightest supersymmetric particle and can be a viable candidate of cold dark matter of the universe. Right-handed sneutrinos are never thermalized in the early universe because of weakness of Yukawa interaction, but are effectively produced by decays of various superparticles. We show that the present mass density of right-handed sneutrino can be consistent with the observed dark matter density.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/c5755cd5f346ec814604445339c38dd61914109b

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Citations in the corpus

Sneutrino cold dark matter, a new analysis: Relic abundance and detection rates (2007, background): “Keywords: Dark Matter and Double Beta Decay, Cosmology of Theories beyond the SM, Gamma and Cosmic Rays, Supersymmetric Effective Theories, Supersymmetry Phenomenology, Supersymmetric Standard Model.”
WIMP dark matter candidates and searches—current status and future prospects (2017, background): “Typically purely right-handed sneutrinos have too small coupling to the SM to be a WIMP candidate but may be a viable non-WIMP candidate; see for example [137].”
UltraViolet freeze-in (2014, background): “f the visible sector and hidden sector are only connected via high dimension operators. 1This framework builds upon earlier specic realisations, most notably the production of right-handed neutrinos [7], axinos [8], and gravitinos [9], and see also [10{12]. { 2 { The UV freeze-in scenario bears some”
Freeze-in production of FIMP dark matter (2009, methodology): “The interaction leads to the freeze-in of the right-handed sneutrino, ν̃R, for example via h̃l → ν̃R and, as computed by Asaka et al [12, 13], can lead to a successful dark matter abundance when ν̃R is the LSP.”