Dark-matter fermion from left-right symmetry
نویسنده
چکیده
In an unconventional realization of left-right symmetry, the particle corresponding to the left-handed neutrino L [with SUð2ÞL interactions] in the right-handed sector, call it nR [with SUð2ÞR interactions], is not its Dirac mass partner, but a different particle which may be a dark-matter candidate. In parallel to leptogenesis in the SUð2ÞL sector, asymmetric production of nR may occur in the SUð2ÞR sector. This mechanism is especially suited for nR mass of order 1 to 10 keV, i.e. warm dark matter, which is a possible new paradigm for explaining the structure of the Universe at all scales.
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تاریخ انتشار 2012