%0 Journal Article
%T The dispirited case of gauged U(1)(B-L) dark matter
%A Escudero, M.
%A Witte, S. J.
%A Rius, N.
%J Journal of High Energy Physics
%D 2018
%V 08
%N 8
%I Springer
%@ 1029-8479
%G English
%F Escudero_etal2018
%O WOS:000443008100006
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3706), last updated on Fri, 07 Sep 2018 11:58:19 +0000
%X We explore the constraints and phenomenology of possibly the simplest scenario that could account at the same time for the active neutrino masses and the dark matter in the Universe within a gauged U(1)(B-L) symmetry, namely right-handed neutrino dark matter. We find that null searches from lepton and hadron colliders require dark matter with a mass below 900 GeV to annihilate through a resonance. Additionally, the very strong constraints from high-energy dilepton searches fully exclude the model for 150 GeV < m(z') < 3 TeV. We further explore the phenomenology in the high mass region (i.e. masses greater than or similar to O(1) TeV) and highlight theoretical arguments, related to the appearance of a Landau pole or an instability of the scalar potential, disfavoring large portions of this parameter space. Collectively, these considerations illustrate that a minimal extension of the Standard Model via a local U(1)(B-L) symmetry with a viable thermal dark matter candidate is difficult to achieve without fine-tuning. We conclude by discussing possible extensions of the model that relieve tension with collider constraints by reducing the gauge coupling required to produce the correct relic abundance.
%K Beyond Standard Model
%K Cosmology of Theories beyond the SM
%R 10.1007/JHEP08(2018)190
%U http://arxiv.org/abs/1806.02823
%U https://doi.org/10.1007/JHEP08(2018)190
%P 190-30pp