Search for Direct Pair Production of Scalar Top Quarks in the Single- and Dilepton Channels in Proton-Proton Collisions at ?s= 8 Tev
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Karapınar, Güler
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Abstract
Results are reported from a search for the top squark t ˜ 1, the lighter of the two supersymmetric partners of the top quark. The data sample corresponds to 19.7 fb−1 of proton-proton collisions at s=8 TeV collected with the CMS detector at the LHC. The search targets t˜1→bχ˜1± and t˜1→t(∗)χ˜10 decay modes, where χ˜1± and χ˜10 are the lightest chargino and neutralino, respectively. The reconstructed final state consists of jets, b jets, missing transverse energy, and either one or two leptons. Leading backgrounds are determined from data. No significant excess in data is observed above the expectation from standard model processes. The results exclude a region of the two-dimensional plane of possible t ˜ 1 and χ˜10 masses. The highest excluded t ˜ 1 and χ˜10 masses are about 700 GeV and 250 GeV, respectively.
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Large Hadron Collider (LHC), Compact Muon Solenoid, Compact Muon Solenoid, Standard Model, lepton, neutralino: mass, P(P)OVER-BAR COLLISIONS, chargino, Top Squark, stop --> top neutralino, supersymmetry: 2, Large Hadron Collider (LHC), PARTICLE PHYSICS; LARGE HADRON COLLIDER; CMS, Physics, Particles & Fields, High Energy Physics - Experiment, stop --> bottom chargino, High Energy Physics - Experiment (hep-ex), Hadron-hadron scattering (experiments), neutralino, Hadron-Hadron scattering (experiments), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], HADRON COLLIDERS, squark: pair production, info:eu-repo/classification/ddc/530, dimension: 2, Hadron-Hadron scattering (experiments); Supersymmetry; top squark, Hadron-Hadron scattering (experiments); Supersymmetry; top squark; Nuclear and High Energy Physics, 8000 GeV-cms, 02 Physical Sciences, stop: mass, CMS, Physics, transverse energy: missing-energy, ddc:530, 001, Nuclear & Particles Physics, Hadron-Hadron Scattering (Experiments), CERN LHC Coll, Q1 Science (General) / természettudomány általában, Physical Sciences, Physique des particules élémentaires, High energy physics, Experimental particle physics, LHC, CMS, Standard Model, PARTICLE PHYSICS, LHC, PARTICLE, jet: bottom, stop --> top neutralino, Nuclear and High Energy Physics, p p: scattering, Hadron-Hadron scattering (experiments); Supersymmetry; Top squark, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], mass: lower limit, Particles & Fields, FOS: Physical sciences, final state: ((n)jet lepton), 530, decay modes, dilepton, Top squark, EVENTS, MODEL HIGGS-BOSON, DARK-MATTER, High energy physics, ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика, 01 Mathematical Sciences, PP COLLISIONS, Science & Technology, stop --> bottom chargino, hep-ex, background, final state: ((n)jet dilepton), stop: decay modes, Física, Supersymmetry top squark, LARGE HADRON COLLIDER, 620, squark, top squark, pair production, Physics and Astronomy, SQUARK, Supersymmetry, Experimental particle physics, p p: colliding beams, experimental results
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01 natural sciences, 06 humanities and the arts, 0103 physical sciences, 0105 earth and related environmental sciences, 0604 arts
Citation
Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T.,...CMS Collaboration (2016). Search for direct pair production of scalar top quarks in the single- and dilepton channels in proton-proton collisions at √s= 8 TeV. Journal of High Energy Physics, 2016(7). doi:10.1007/JHEP07(2016)027
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2016
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7
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