Testing ATLAS Z+MET Excess with LHC Run 2

Jan 21, 2016
19 pages
Published in:
  • JHEP 05 (2016) 108
  • Published: May 18, 2016
e-Print:
Report number:
  • DESY-16-005,
  • APCTP-PRE2016-003,
  • UT-16-02

Citations per year

20142015201602
Abstract: (Springer)
The ATLAS collaboration reported a 3σ excess in the search of events containing on-Z dilepton, jets, and large missing momentum (MET) in the 8 TeV LHC run. Motivated by this excess, many models of new physics have been proposed. Recently, the ATLAS and CMS collaborations reported new results for similar Z+MET channels in the 13 TeV run. In this paper, we comprehensively discuss the consistency between the proposed models and the LHC results of Run 1 and Run 2. We find that in models with heavy gluino production, there is generically some tension between the 8 TeV and 13 TeV results. On the other hand, models with light squark production provide relatively better fitting to both results.
Note:
  • 18 pages, 2 tables, 8 figures. Version accepted for publication in JHEP
  • Supersymmetry Phenomenology
  • supersymmetry
  • squark: production
  • gluino: production
  • gluino: heavy
  • p p --> Z0 missing-energy
  • numerical calculations: Monte Carlo
  • interpretation of experiments
  • CMS
  • ATLAS