Small Neutrino Masses from Supersymmetry Breaking [electronic resource].

Published:: Berkeley, Calif. : Lawrence Berkeley National Laboratory, 2000.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators:: Lawrence Berkeley National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

An alternative to the conventional see-saw mechanism is proposed to explain the origin of small neutrino masses in supersymmetric theories. The masses and couplings of the right-handed neutrino field are suppressed by supersymmetry breaking, in a way similar to the suppression of the Higgs doublet mass, $\mu$. New mechanisms for light Majorana, Dirac and sterile neutrinos arise, depending on the degree of suppression. Superpartner phenomenology is greatly altered by the presence of weak scale right-handed sneutrinos, which may have a coupling to a Higgs boson and a left-handed sneutrino. The sneutrino spectrum and couplings are quite unlike the conventional case - the lightest sneutrino can be the dark matter and predictions are given for event rates at upcoming halo dark matter direct detection experiments. Higgs decays and search strategies are changed. Copious Higgs production at hadron colliders can result from cascade decays of squarks and gluinos.

Report Numbers:

E 1.99:lbnl-46180
lbnl-46180

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Published through SciTech Connect.
06/27/2000.
"lbnl-46180"
Physical Review D ISSN 1550-7998; PRVDAQ FT
Smith, David; Arkani-Hamed, Nima; Murayama, Hitoshi; Weiner, Neal; Hall, Lawrence.
Physics Division

Funding Information:

DE-AC02-05CH11231

View MARC record | catkey: 14711084