Search for minimal supersymmetric standard model Higgs Bosons H / A and for a Z′ boson in the ττ final state produced in pp collisions at √s =13 TeV with the ATLAS detector

ATLAS Collaboration

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Abstract

A search for neutral Higgs bosons of the minimal supersymmetric standard model (MSSM) and for a heavneutral Z′Z′ boson is performed using a data sample corresponding to an integrated luminosity of 3.2 fb−1−1 from proton–proton collisions at s√=13s=13  TeVTeV recorded by the ATLAS detector at the LHC. The heavy resonance is assumed to decay to a τ+τ−τ+τ− pair with at least one ττ lepton decaying to final states with hadrons and a neutrino. The search is performed in the mass range of 0.2–1.2  TeVTeV for the MSSM neutral Higgs bosons and 0.5–2.5  TeVTeV for the heavy neutral Z′Z′ boson. The data are in good agreement with the background predicted by the Standard Model. The results are interpreted in MSSM and Z′Z′ benchmark scenarios. The most stringent constraints on the MSSM mAmA–tanβtan⁡β space exclude at 95 % confidence level (CL) tanβ>7.6tan⁡β>7.6 for mA=200mA=200 GeVGeV in the mmod+hmhmod+ MSSM scenario. For the Sequential Standard Model, a Z′SSMZSSM′ mass up to 1.90  TeVTeV is excluded at 95 % CL and masses up to 1.82–2.17  TeVTeVare excluded for a Z′SFMZSFM′ of the strong flavour model.
Original languageEnglish
Article number585
JournalEur. Phys. J. C
Volume76
Issue number11
Early online date27 Oct 2016
DOIs
Publication statusPublished - Nov 2016

Bibliographical note

28 pages plus author list + cover pages (46 pages total), 6 figures, 3 tables, published in European Physical Journal C. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2015-08/

Keywords

  • hep-ex

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