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Search for high-mass new phenomena in the dilepton final state using proton-proton collisions at √s = 13 TeV with the ATLAS detector

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    0471119 - FZÚ 2017 RIV NL eng J - Journal Article
    Aaboud, M. - Aad, G. - Abbott, B. - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … Total 2862 authors
    Search for high-mass new phenomena in the dilepton final state using proton-proton collisions at √s = 13 TeV with the ATLAS detector.
    Physics Letters. B. Roč. 761, Oct (2016), 372-392. ISSN 0370-2693. E-ISSN 1873-2445
    Institutional support: RVO:68378271
    Keywords : ATLAS * contact interaction * cross section * branching ratio * upper limit * CERN LHC Coll * experimental results * 13000 GeV-cms
    Subject RIV: BF - Elementary Particles and High Energy Physics
    Impact factor: 4.807, year: 2016

    A search is conducted for both resonant and non-resonant high-mass new phenomena in dielectron and dimuon final states. The search uses 3.2fb−1 of proton–proton collision data, collected at s√=13TeV 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 ℓℓqq contact interaction scale are set between 16.7 TeV and 25.2 TeV, also depending on the model.

    Permanent Link: http://hdl.handle.net/11104/0268569

     
     
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