Neutrino Masses, Dark Matter and B-L Symmetry at the LHC

Abstract

We establish a hybrid seesaw mechanism to explain small neutrino masses and predict cold dark matter candidate in the context of the B-L gauge symmetry extension of the Standard Model. In this model a new scalar doublet and two new fermion singlets are introduced at loop-level beyond the minimal Type I seesaw. The lightest particle inside the loop can be dark matter candidate. We study in detail the constraints from neutrino oscillation data, lepton flavor violating processes and cosmological observation. We also explore the predictions of the decays of the new charged scalars in each spectrum of neutrino masses and show the most optimistic scenarios to distinguish the spectra. We consider the pair production of the stable fermion associated with two observable SM charged leptons at the LHC, which occurs in a two-step cascade decay of the new gauge boson Z' and the new charged scalars stand as intermediate particles. The masses of missing dark matter and its parent particle can be well-determined in such production topology.

20 pages, 9 figures and 2 tables, revised version accepted for publication in Nucl. Phys. B

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Cited by in corpus (24)

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• NLO+NLL Collider Bounds, Dirac Fermion and Scalar Dark Matter in the B-L Model
• Searches for Long-Lived Particles at the Future FCC-ee
• Recipes and Ingredients for Neutrino Mass at Loop Level
• Atomki anomaly and dark matter in a radiative seesaw model with gauged $B-L$ symmetry
• Naturalness and Dark Matter in the BLSSM
• Right-handed Sneutrino Dark Matter in Supersymmetric B-L Model
• Measuring heavy neutrino couplings at the LHC
• Warm Dark Matter in B-L Inverse Seesaw
• Fermionic dark matter and neutrino masses in a $\mathcal{B}-\mathcal{L}$ model
• R$\nu$MDM and Lepton Flavor Violation
• Mono-jet, -photon and -Z Signals of a Supersymmetric (B-L) model at the Large Hadron Collider
• Search for Mono-Higgs Signals at the LHC in the B-L Supersymmetric Standard Model
• Right-handed sneutrino-antisneutrino oscillations in a TeV scale Supersymmetric B-L model
• Majorana Dark matter with B+L gauge symmetry
• Predictive Scotogenic Model with Flavor Dependent Symmetry
• Next-to-leading order QCD predictions for the signal of Dark Matter and photon associated production at the LHC
• Dark Matter in B-L Supersymmetric Standard Model with Inverse Seesaw
• Searching for the signal of dark matter and photon associated production at the LHC beyond leading order
• Dark Matter and Higgs Boson in a Model with Discrete Gauge Symmetry
• Long-Lived BLSSM Particles at the LHC
• Neutrino oscillation in dark matter with $L_{\mu }-L_{\tau }$