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Title: Simplified models for displaced dark matter signatures

We propose a systematic programme to search for long-lived neutral particle signatures through a minimal set of displaced =E T searches (dMETs). Here, our approach is to extend the well-established dark matter simpli ed 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 longlived 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.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [4]
  1. Imperial College, London (United Kingdom). Blackett Lab., High Energy Physics Group
  2. European Organization for Nuclear Research (CERN), Geneva (Switzerland). Dept. of Physics; Antwerp Univ., Wilrijk (Belgium)
  3. Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy
  4. European Organization for Nuclear Research (CERN), Geneva (Switzerland). Theoretical Physics Dept.
  5. Johannes Gutenberg Univ., Mainz (Germany). PRISMA Cluster of Excellence & Inst. of Physics
  6. Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy
Publication Date:
Grant/Contract Number:
SC0015973
Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 9; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Research Org:
Northwestern Univ., Evanston, IL (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Beyond Standard Model; Dark matter; Hadron-Hadron scattering (experiments); Lifetime; Supersymmetry
OSTI Identifier:
1426162