ATLAS collaboration (2870 authors)Aguilar-Saavedra, Juan AntonioAmor Dos Santos, Susana PatriciaAraque, Juan PedroCastro, Nuno FilipeConde Mui\~no, PatriciaDa Cunha Sargedas De Sousa, Mario JoseFiolhais, MiguelGalhardo, BrunoGomes, AgostinhoGon\c calo, RicardoJorge, PedroMachado Miguens, JoanaMaio, Am\'eliaManeira, Jos\'eOleiro Seabra, Luis FilipeOnofre, Ant\'onioPedro, RuteSantos, HelenaSaraiva, Jo\~aoSilva, Jos\'eTavares Delgado, AdemarVeloso, FilipeWolters, Helmut2019-02-052019-02-052018-05-23http://dx.doi.org/10.1103/PhysRevLett.120.211802http://hdl.handle.net/10400.26/27578A direct search for the standard model Higgs boson decaying to a pair of charm quarks is presented. Associated production of the Higgs and Z bosons, in the decay mode ZH→ℓ+ℓ-cc¯ is studied. A data set with an integrated luminosity of 36.1  fb-1 of pp collisions at s=13TeV recorded by the ATLAS experiment at the LHC is used. The H→cc¯ signature is identified using charm-tagging algorithms. The observed (expected) upper limit on σ(pp→ZH)×B(H→cc¯) is 2.7 (3.9-1.1+2.1) pb at the 95% confidence level for a Higgs boson mass of 125 GeV, while the standard model value is 26 fb.engjournal article2019-02-05