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    Search for supersymmetry with a compressed mass spectrum in the vector boson fusion topology with 1-lepton and 0-lepton final states in proton-proton collisions at √s = 13 TeV

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    Search for supersymmetry with a compressed mass spectrum in the vector boson fusion topology with 1-lepton and 0-lepton final states in proton-proton collisions at s=\sqrt{s}= 13 TeV

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    A search for supersymmetric particles produced in the vector boson fusion topology in proton-proton collisions is presented. The search targets final states with one or zero leptons, large missing transverse momentum, and two jets with a large separation in rapidity. The data sample corresponds to an integrated luminosity of 35.9 fb1^{-1} of proton-proton collisions at s=\sqrt{s}= 13 TeV collected in 2016 with the CMS detector at the LHC. The observed dijet invariant mass and lepton-neutrino transverse mass spectra are found to be consistent with the standard model predictions. Upper limits are set on the cross sections for chargino (χ~1±\widetilde\chi_1^\pm) and neutralino (χ~20\widetilde\chi_2^0) production with two associated jets. For a compressed mass spectrum scenario in which the χ~1±\widetilde\chi_1^\pm and χ~20\widetilde\chi_2^0 decays proceed via a light slepton and the mass difference between the lightest neutralino χ~10\widetilde\chi_1^0 and the mass-degenerate particles χ~1±\widetilde\chi_1^\pm and χ~20\widetilde\chi_2^0 is 1 (30) GeV, the most stringent lower limit to date of 112 (215) GeV is set on the mass of these latter two particles
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