Neutrinos and Collider Physics

TL;DR

This paper reviews collider phenomenology related to neutrino mass mechanisms, focusing on experimental constraints and future prospects for testing seesaw models and related new physics at colliders and low-energy experiments.

Contribution

It provides an updated overview of experimental constraints and future testing strategies for neutrino mass models, especially seesaw scenarios, at colliders and low-energy experiments.

Findings

Current constraints on sterile neutrino mass and mixing

Potential collider signatures of seesaw models

Implications for lepton number violation and leptogenesis

Abstract

We review the collider phenomenology of neutrino physics and the synergetic aspects at energy, intensity and cosmic frontiers to test the new physics behind the neutrino mass mechanism. In particular, we focus on seesaw models within the minimal setup as well as with extended gauge and/or Higgs sectors, and on supersymmetric neutrino mass models with seesaw mechanism and with $R$-parity violation. In the simplest Type-I seesaw scenario with sterile neutrinos, we summarize and update the current experimental constraints on the sterile neutrino mass and its mixing with the active neutrinos. We also discuss the future experimental prospects of testing the seesaw mechanism at colliders and in related low-energy searches for rare processes, such as lepton flavor violation and neutrinoless double beta decay. The implications of the discovery of lepton number violation at the LHC for leptogenesis are also studied.