Right-handed neutrinos: the hunt is on!

Abstract

The possibility of the existence of right-handed neutrinos remains one of the most important open questions in particle physics, as they can help elucidate the problems of neutrino masses, matter-antimatter asymmetry, and dark matter. Interest in this topic has been increasing in recent years with the proposal of new experimental avenues by which right-handed neutrinos with masses below the electroweak scale could be detected directly using displaced-vertex signatures. At the forefront of such endeavours, the proposed SHiP proton beam-dump experiment is designed for a large acceptance to new weakly-coupled particles and low backgrounds. It is capable of probing right-handed neutrinos with masses below 5~GeV and mixings several orders of magnitude smaller than current constraints, in regions favoured by cosmology. To probe higher masses (up to 30~GeV), a promising novel approach is to identify displaced vertices from right-handed neutrinos produced in $W$ decays at LHC experiments.

9 pages, 4 figures, NuPhys2016 Conference

References in corpus (15)

• A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case
• How to find neutral leptons of the nuMSM?
• A facility to Search for Hidden Particles (SHiP) at the CERN SPS
• Sterile Neutrinos as the Origin of Dark and Baryonic Matter
• Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at $\sqrt{s}=8$ TeV
• Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Search for long-lived neutral particles decaying to quark-antiquark pairs in proton-proton collisions at sqrt(s) = 8 TeV
• Multilepton and Lepton Jet Probes of Sub-Weak-Scale Right-Handed Neutrinos
• Search for heavy Majorana neutrinos in mu+/- mu+/- + jets events in proton-proton collisions at sqrt(s) = 8 TeV
• Search for long-lived particles that decay into final states containing two electrons or two muons in proton-proton collisions at sqrt(s) = 8 TeV
• Search for long-lived neutral particles decaying into lepton jets in proton--proton collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Search for Displaced Supersymmetry in events with an electron and a muon with large impact parameters
• Search for a light Higgs boson decaying to long-lived weakly-interacting particles in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Probing leptogenesis with GeV-scale sterile neutrinos at LHCb and BELLE II
• The active muon shield in the SHiP experiment

Cited by in corpus (6)

• Search for heavy neutral leptons in decays of $W$ bosons produced in 13 TeV $pp$ collisions using prompt and displaced signatures with the ATLAS detector
• Implications of right-handed neutrinos in $B-L$ extended standard model with scalar dark matter
• Hidden sector searches with SHiP and NA62
• On the Minimal Mixing of Heavy Neutrinos
• Generalised Proper Time as a Unifying Basis for Models with Two Right-Handed Neutrinos
• Naturally-Coupled Dark Sectors