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arXiv · 1703.00199

Asymmetric Dark Matter and Baryogenesis from $SU(2)_{\ell}$

Bartosz Fornal·Yuri Shirman·Tim M. P. Tait·Jennifer Rittenhouse West
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Abstract

We propose a theory in which the Standard Model gauge symmetry is extended by a new $SU(2)_\ell$ group acting nontrivially on the lepton sector which is spontaneously broken at the TeV scale. Under this $SU(2)_\ell$ the ordinary leptons form doublets along with new lepton partner fields. This construction naturally contains a dark matter candidate, the partner of the right-handed neutrino, stabilized by a residual global $U(1)_\chi$ symmetry. We show that one can explain baryogenesis through an asymmetric dark matter scenario, in which generation of related asymmetries in the dark matter and baryon sectors is driven by the $SU(2)_\ell$ instantons during a first order phase transition in the early universe.

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Bartosz Fornal, Yuri Shirman, Tim M. P. Tait, Jennifer Rittenhouse West. 2017-03-01. Asymmetric Dark Matter and Baryogenesis from $SU(2)_{\ell}$. https://doi.org/10.1103/physrevd.96.035001

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