Simplified models for displaced dark matter signatures

Journal of High Energy Physics

Kristian Hahn¹  Kevin Sung¹  Oliver Buchmueller²  Pedro Schwaller³  Albert De Roeck⁴  Matthew McCullough⁵  Tien-Tien Yu⁵ 

[1] Department of Physics and Astronomy, Northwestern University;High Energy Physics Group, Blackett Laboratory, Imperial College;PRISMA Cluster of Excellence & Institute of Physics, Johannes Gutenberg University;Physics Department, CERN;Theoretical Physics Department, CERN;

关键词: Beyond Standard Model;    Dark matter;    Hadron-Hadron scattering (experiments);    Lifetime;    Supersymmetry;   

DOI  :  10.1007/JHEP09(2017)076

来源: DOAJ

【 摘 要 】

Abstract We propose a systematic programme to search for long-lived neutral particle signatures through a minimal set of displaced searches (dMETs). Our approach is to extend the well-established dark matter simplified models to include displaced vertices. The dark matter simplified models are used to describe the primary production vertex. A displaced secondary vertex, characterised by the mass of the long-lived particle and its lifetime, is added for the displaced signature. We show how these models can be motivated by, and mapped onto, complete models such as gauge-mediated SUSY breaking and models of neutral naturalness. We also outline how this approach may be used to extend other simplified models to incorporate displaced signatures and to characterise searches for long-lived charged particles. Displaced vertices are a striking signature which is often virtually background free, and thus provide an excellent target for the high-luminosity run of the Large Hadron Collider. The proposed models and searches provide a first step towards a systematic broadening of the displaced dark matter search programme.

【 授权许可】

Unknown