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A search is performed for Higgs-boson-mediated flavor-changing neutralcurrents in the decays of top quarks. The search is based on proton-protoncollision data corresponding to an integrated luminosity of 19.7 inversefemtobarns at a center-of-mass energy of 8 TeV collected with the CMS detectorat the LHC. Events in which a top quark pair is produced with one top quarkdecaying into a charm or up quark and a Higgs boson (H), and the other topquark decaying into a bottom quark and a W boson are selected. The Higgs bosonin these events is assumed to subsequently decay into either dibosons ordifermions. No significant excess is observed above the expected standard modelbackground, and an upper limit at the 95% confidence level is set on thebranching fraction B(t to Hc) of 0.40% and B(t to Hu) of 0.55%, where theexpected upper limits are 0.43% and 0.40%, respectively. These resultscorrespond to upper limits on the square of the flavor-changing Higgs bosonYukawa couplings |lambda[tc]^H|^2 < 6.9E-3 and |lambda[tu]^H|^2 < 9.8E-3.

Search for top quark decays via Higgs-boson-mediated flavor-changing neutral currents in pp collisions at sqrt(s) = 8 TeV