Search for high-mass new phenomena in the dilepton final state using proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector

ATLAS Collaboration

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Abstract

A search is conducted for both resonant and non-resonant high-mass new phenomena in dielectron and dimuon final states. The search uses 3.2 fb$^{-1}$ of proton-proton collision data, collected at $\sqrt{s} = 13$ TeV by the ATLAS experiment at the LHC in 2015. The dilepton invariant mass is used as the discriminating variable. No significant deviation from the Standard Model prediction is observed; therefore limits are set on the signal model parameters of interest at 95% credibility level. Upper limits are set on the cross-section times branching ratio for resonances decaying to dileptons, and the limits are converted into lower limits on the resonance mass, ranging between 2.74 TeV and 3.36 TeV, depending on the model. Lower limits on the $\ell\ell qq$ contact interaction scale are set between 16.7 TeV and 25.2 TeV, also depending on the model.
Original languageEnglish
Pages (from-to)372–392
JournalPhysics Letters B
Volume761
Early online date30 Aug 2016
DOIs
Publication statusPublished - 10 Oct 2016

Bibliographical note

18 pages plus author list + cover pages (35 pages total), 4 figures, 4 tables, published by Phys. Lett. B. All figures, including auxiliary figures, are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2015-07

Keywords

  • hep-ex

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