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Search for electroweak production of charginos and neutralinos at √s = 13 TeV in final states containing hadronic decays of WW, WZ, or WH and missing transverse momentum

par Tumasyan, A.;Beghin, Diego ;Bilin, Bugra ;Clerbaux, Barbara ;De Lentdecker, Gilles ;Favart, Laurent ;Kalsi, Amandeep Kaur ;Lee, Kyeongpil ;Mahdavikhorrami, Mostafa ;Makarenko, Inna ;Moureaux, Louis ;Paredes Saenz, Santiago ;Pétré, Laurent ;Popov, Andrey ;Postiau, Nicolas ;Starling, Elizabeth Rose ;Thomas, Laurent ;Vanden Bemden, Max ;Vander Velde, Catherine ;Vanlaer, Pascal ;Malara, Andrea ; [et al.]
Référence Physics letters. Section B, 842, 137460
Publication Publié, 2023-01-01

Article révisé par les pairs

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Résumé :

This Letter presents a search for direct production of charginos and neutralinos via electroweak interactions. The results are based on data from proton-proton collisions at a center-of-mass energy of 13 TeV collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 137 fb−1. The search considers final states with large missing transverse momentum and pairs of hadronically decaying bosons WW, WZ, and WH, where H is the Higgs boson. These bosons are identified using novel algorithms. No significant excess of events is observed relative to the expectations from the standard model. Limits at the 95% confidence level are placed on the cross section for production of mass-degenerate wino-like supersymmetric particles χ˜1 ± and χ˜2 0, and mass-degenerate higgsino-like supersymmetric particles χ˜1 ±, χ˜2 0, and χ˜3 0. In the limit of a nearly-massless lightest supersymmetric particle χ˜1 0, wino-like particles with masses up to 870 and 960 GeV are excluded in the cases of χ˜2 0→Zχ˜1 0 and χ˜2 0→Hχ˜1 0, respectively, and higgsino-like particles are excluded between 300 and 650 GeV.