Lepton Number Violation: Seesaw Models and Their Collider Tests

Frontiers in Physics

Han, Tao¹  Li, Tong²  Ruiz, Richard³  Cai, Yi⁴ 

[1] Department of Physics and Astronomy, University of Pittsburgh, United States;Department of Physics, Collaborative Innovation Center of Quantum Matter, Tsinghua University, China;Department of Physics, Tsinghua University, and Collaborative Innovation Center of Quantum Matter, China;School of Physics, Sun Yat-sen University, China

关键词: Lepton number violation;    Neutrino mass models;    collider physics;    seesaw mechanisms;    Neutrino Collider Phenomenology;   

DOI  :  10.3389/fphy.2018.00040

学科分类：物理（综合）

来源: Frontiers

【 摘 要 】

The Majorana nature of neutrinos is strongly motivated from the theoretical and phenomenological point of view. A plethora of neutrino mass models, known collectively as Seesaw models, exist that could generate both a viable neutrino mass spectrum and mixing pattern. They can also lead to rich, new phenomenology, including lepton number non-conservation as well as new particles, that may be observable at collider experiments. It is therefore vital to search for such new phenomena and the mass scale associated with neutrino mass generation at high energy colliders. In this review, we consider a number of representative Seesaw scenarios as phenomenological benchmarks, including the characteristic Type I, II, and III Seesaw mechanisms, their extensions and hybridizations, as well as radiative constructions. We present new and updated predictions for analyses featuring lepton number violation and expected coverage in the theory parameter space at current and future colliders. We emphasize new production and decay channels, their phenomenological relevance and treatment across different facilities in $e^+e^-$, $e^-p$ and $pp$ collisions, as well as the available Monte Carlo tools available for studying Seesaw partners in collider environments.

【 授权许可】

CC BY