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Search for chargino–neutralino pair production in final states with three leptons and missing transverse momentum in √s=13 TeV pp collisions with the ATLAS detector
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- Andrean, Stefio Y., 1991- (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Backman, Filip, 1991- (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Barranco Navarro, Laura (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- (creator_code:org_t)
- 2021-12-20
- 2021
- English.
- In: European Physical Journal C. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 81:12
- Journal article (peer-reviewed)
Abstract
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- A search for chargino–neutralino pair productionin three-lepton final states with missing transverse momentum is presented. The study is based on a dataset of √s =13 TeV pp collisions recorded with the ATLAS detectorat the LHC, corresponding to an integrated luminosity of 139 fb−1. No significant excess relative to the Standard Model predictions is found in data. The results are interpreted in simplified models of supersymmetry, and statistically combined with results from a previous ATLAS search for compressed spectra in two-lepton final states. Various scenarios for the production and decay of charginos (χ˜ ±1 ) and neutralinos (χ˜ 02 ) are considered. For pure higgsino χ˜ ±1 χ˜ 02 pair production scenarios, exclusion limits at 95% confidence level are set on χ˜ 02 masses up to 210 GeV. Limits are also set for pure wino χ˜ ±1 χ˜ 02 pair production, on χ˜ 02 masses up to 640 GeV for decays via on-shell W and Z bosons, up to 300 GeV for decays via off-shell W and Z bosons, and up to 190 GeV for decays via W and Standard Model Higgs bosons.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
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- ref (subject category)
- art (subject category)
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