Identifying boosted new physics with non-isolated leptons

  • Christopher Brust
  • Petar Maksimovic
  • Alice Sady
  • Prashant Saraswat
  • Matthew T. Walters
  • Yongjie Xin
Open Access
Regular Article - Experimental Physics


We demonstrate the utility of leptons which fail standard isolation criteria in searches for new physics at the LHC. Such leptons can arise in any event containing a highly boosted particle which decays to both leptons and quarks. We begin by considering multiple extensions to the Standard Model which primarily lead to events with non-isolated leptons and are therefore missed by current search strategies. We emphasize the failure of standard isolation variables to adequately discriminate between signal and SM background for any value of the isolation cuts. We then introduce a new approach which makes use of jet substructure techniques to distinguish a broad range of signals from QCD events. We proceed with a simulated, proof-of-principle search for R-parity violating supersymmetry to demonstrate both the experimental reach possible with the use of non-isolated leptons and the utility of new substructure variables over existing techniques.


Jet substructure Beyond Standard Model Hadron-Hadron Scattering 


Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.


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Copyright information

© The Author(s) 2015

Authors and Affiliations

  • Christopher Brust
    • 1
    • 2
    • 3
  • Petar Maksimovic
    • 1
  • Alice Sady
    • 1
  • Prashant Saraswat
    • 1
    • 2
  • Matthew T. Walters
    • 1
    • 4
  • Yongjie Xin
    • 1
  1. 1.Department of Physics and AstronomyJohns Hopkins UniversityBaltimoreUnited States
  2. 2.Department of PhysicsUniversity of MarylandCollege ParkUnited States
  3. 3.Perimeter Institute for Theoretical PhysicsWaterlooCanada
  4. 4.Department of PhysicsBoston UniversityBostonUnited States

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