Tumasyan, A.Adam, W.Andrejkovic, J.W.Bergauer, T.Chatterjee, S.Damanakis, K.Dragicevic, M.Gürpınar Güler, EmineGüler, Yalçın2023-11-112023-11-1120230031-90071079-7114https://doi.org/10.1103/PhysRevLett.131.041801https://hdl.handle.net/20.500.13091/4780A search for the standard model (SM) Higgs boson ( H ) produced with transverse momentum ( p T ) greater than 450 GeV and decaying to a charm quark-antiquark ( c c ¯ ) pair is presented. The search is performed using proton-proton collision data collected at s = 13 TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 138 fb - 1 . Boosted H → c c ¯ decay products are reconstructed as a single large-radius jet and identified using a deep neural network charm tagging technique. The method is validated by measuring the Z → c c ¯ decay process, which is observed in association with jets at high p T for the first time with a signal strength of 1.00 - 0.14 + 0.17 ( syst ) ± 0.08 ( theo ) ± 0.06 ( stat ) , defined as the ratio of the observed process rate to the SM expectation. The observed (expected) upper limit on σ ( H ) B ( H → c c ¯ ) is set at 47 (39) times the SM prediction at 95% confidence level. © 2023 CERN, for the CMS Collaboration.eninfo:eu-repo/semantics/openAccessDeep neural networksGermanium compoundsTellurium compoundsAntiquarksCharm quarksHiggs bosonIntegrated luminosityProton proton collisionsQuark antiquark pairStandard-model Higgs bosonsThe standard modelTransverse momentaZ BosonsBosonsArticle10.1103/PhysRevLett.131.0418012-s2.0-85174180574