SU(2)$_L\times$SU(2)$_R$ minimal dark matter with 2 TeV $W'$

P. Ko; Takaaki Nomura

doi:10.1016/j.physletb.2015.12.072

paper

SU(2) $_{L} \times$ SU(2) $_{R}$ minimal dark matter with 2 TeV $W^{'}$

arXiv:1510.07872 · doi:10.1016/j.physletb.2015.12.072

Abstract

We construct the minimal dark matter models in the left-right symmetric extensions of the standard model (SM), where the gauge symmetry SU(3) $_{C} \times$ SU(2) $_{L} \times$ SU(2) $_{R} \times$ U(1) $_{B - L}$ is broken into its subgroup SU(3) $_{C} \times$ U(1) $_{em}$ by nonzero VEVs of a SU(2) $_{R}$ doublet $H_{R}$ and a SU(2) $_{L} \times$ SU(2) $_{R}$ bidoublet $H$ . A possible candidate of dark matter is explored in the framework of minimal dark matter considering SU(2) $_{L, R}$ multiplet scalar bosons and fermions. Then we focus on SU(2) $_{R}$ quintuplet fermions with $B - L$ charges 0, 2 and 4 as the minimal dark matter candidates and investigate phenomenology of them. We show that the dark matter in the model can provide observed relic density with 2 TeV $W^{'}$ boson which is motivated by the ATLAS diboson excess and CMS $ee j j$ excess. The possible mass of dark matter is predicted for each $B - L$ charge. We then estimate the scattering cross section of dark matter with nucleon and production cross section of charged components in the quintuplets at the LHC.

12 pages, 11 figures, version published in Phys. Lett. B

SU(2) $_{L} \times$ SU(2) $_{R}$ minimal dark matter with 2 TeV $W^{'}$

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SU(2) $_{L} \times$ SU(2) $_{R}$ minimal dark matter with 2 TeV $W^{'}$