TY  - JOUR
AU  - Escudero, M.
AU  - Witte, S. J.
AU  - Rius, N.
PY  - 2018
DA  - 2018//
TI  - The dispirited case of gauged U(1)(B-L) dark matter
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 190
EP  - 30pp
VL  - 08
IS  - 8
PB  - Springer
KW  - Beyond Standard Model
KW  - Cosmology of Theories beyond the SM
AB  - 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.
SN  - 1029-8479
UR  - http://arxiv.org/abs/1806.02823
UR  - https://doi.org/10.1007/JHEP08(2018)190
DO  - 10.1007/JHEP08(2018)190
LA  - English
N1  - WOS:000443008100006
ID  - Escudero_etal2018
ER  -