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Title: Search for high mass dilepton resonances in pp collisions at $$\sqrt{s} = 7$$ TeV with the ATLAS experiment

This article presents a search for high mass e⁺e⁻ or μ⁺μ⁻ resonances in pp collisions at √s = 7 TeV at the LHC. The data were recorded by the ATLAS experiment during 2010 and correspond to a total integrated luminosity of ~ 40 pb⁻¹. No statistically significant excess above the Standard Model expectation is observed in the search region of dilepton invariant mass above 110 GeV. Upper limits at the 95% confidence level are set on the cross section times branching ratio of Z' resonances decaying to dielectrons and dimuons as a function of the resonance mass. Lastly, a lower mass limit of 1.048 TeV on the Sequential Standard Model Z' boson is derived, as well as mass limits on Z' and E₆-motivated Z' models.
  1. Albert-Ludwigs-Univ., Freiburg (Germany). et al.
Publication Date:
Grant/Contract Number:
FG02-95ER40893; AC02-76SF00515
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 700; Journal Issue: 3-4; Journal ID: ISSN 0370-2693
Research Org:
Univ. of Pennsylvania, Philadelphia, PA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
ATLAS Collaboration
Country of Publication:
United States
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; high mass dilepton; Grand unified theory; Narrow resonance; New gauge boson; Z′; Dilepton; Mass spectrum
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1196563; OSTI ID: 1380109