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230516|2022 gw s a eng d |
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|a 10.1007/JHEP04(2022)091
|2 doi
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|a koha001001850
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|a RU-ToGU
|b rus
|c RU-ToGU
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|a Search for supersymmetry in final states with two or three soft leptons and missing transverse momentum in proton-proton collisions at √s = 13 TeV
|c A. Tumasyan, W. Adam, J. W. Andrejkovic [et al.]
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|a Текст
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|a электронный
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|a Библиогр.: 35 назв.
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|a A search for supersymmetry in events with two or three low-momentum leptons and missing transverse momentum is performed. The search uses proton-proton collisions at root s = 13TeV collected in the three-year period 2016-2018 by the CMS experiment at the LHC and corresponding to an integrated luminosity of up to 137 fb(-1). The data are found to be in agreement with expectations from standard model processes. The results are interpreted in terms of electroweakino and top squark pair production with a small mass difference between the produced supersymmetric particles and the lightest neutralino. For the electroweakino interpretation, two simplified models are used, a wino-bino model and a higgsino model. Exclusion limits at 95% confidence level are set on (X) over tilde (0)(2) /(X) over tilde (+/-)(1) masses up to 275 GeV for a mass difference of 10 GeV in the wino-bino case, and up to 205(150) GeV for a mass difference of 7.5 (3) GeV in the higgsino case. The results for the higgsino are further interpreted using a phenomenological minimal supersymmetric standard model, excluding the higgsino mass parameter mu up to 180 GeV with the bino mass parameter M-1 at 800 GeV. In the top squark interpretation, exclusion limits are set at top squark masses up to 540 GeV for four-body top squark decays and up to 480 GeV for chargino-mediated decays with a mass difference of 30 GeV.
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|a адрон-адронное рассеяние
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|a cуперсимметрия
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|a протон-протонные столкновения
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|a лептоны
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|a статьи в журналах
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|a Tumasyan, Armen
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|a Adam, Wolfgang
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|a Andrejkovic, Janik Walter
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|a Borshch, Vladislav
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|a Ivanchenko, Vladimir
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|a Tcherniaev, Evgueni
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|t Journal of high energy physics
|d 2022
|g Vol. 4. P. 91 (1-57)
|x 1126-6708
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|a RU-ToGU
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|u http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001001850
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|a статья
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|d 1001850
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