% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Aaboud:418017, author = {Aaboud, Morad and others}, collaboration = {{ATLAS Collaboration}}, title = {{S}earch for flavor-changing neutral currents in top quark decays $t\to {H}c$ and $t \to {H}u$ in multilepton final states in proton-proton collisions at $\sqrt{s}= 13$ {T}e{V} with the {ATLAS} detector}, journal = {Physical review / D}, volume = {98}, number = {3}, issn = {0556-2821}, address = {Woodbury, NY}, publisher = {APS}, reportid = {PUBDB-2019-00145, arXiv:1805.03483. CERN-EP-2018-067}, pages = {032002}, year = {2018}, abstract = {Flavor-changing neutral currents are not present in the Standard Model at tree level and are suppressed in loop processes by the unitarity of the Cabibbo-Kobayashi-Maskawa matrix; the corresponding rates for top quark decay processes are experimentally unobservable. Extensions of the Standard Model can generate new flavor-changing neutral current processes, leading to signals which, if observed, would be unambiguous evidence of new interactions. A dataset corresponding to an integrated luminosity of 36.1 fb$^{-1}$ of $pp$ collisions at a center-of-mass energy of $\sqrt{s}=$ 13 TeV recorded with the ATLAS detector at the Large Hadron Collider is used to search for top quarks decaying to up or charm quarks with the emission of a Higgs boson, with subsequent Higgs boson decay to final states with at least one electron or muon. No signal is observed and limits on the branching fractions $\mathcal{B}(t \to Hc) <$ 0.16\% and $\mathcal{B}(t \to H u) <$ 0.19\% at 95\% confidence level are obtained (with expected limits of 0.15\% in both cases).}, keywords = {p p: colliding beams (INSPIRE) / top: rare decay (INSPIRE) / neutral current: flavor changing (INSPIRE) / Higgs particle: decay modes (INSPIRE) / W: pair production (INSPIRE) / Z0: pair production (INSPIRE) / tau: pair production (INSPIRE) / W: leptonic decay (INSPIRE) / Z0: leptonic decay (INSPIRE) / tau: leptonic decay (INSPIRE) / p p: scattering (INSPIRE) / ATLAS (INSPIRE) / tree approximation (INSPIRE) / new interaction (INSPIRE) / top: branching ratio: upper limit (INSPIRE) / CERN LHC Coll (INSPIRE) / suppression (INSPIRE) / CKM matrix: unitarity (INSPIRE) / up: associated production (INSPIRE) / charm: associated production (INSPIRE) / experimental results (INSPIRE) / top --> Higgs particle charm (INSPIRE) / top --> Higgs particle up (INSPIRE) / 13000 GeV-cms (INSPIRE)}, cin = {ATLAS}, ddc = {530}, cid = {I:(DE-H253)ATLAS-20120731}, pnm = {611 - Fundamental Particles and Forces (POF3-611)}, pid = {G:(DE-HGF)POF3-611}, experiment = {EXP:(DE-H253)LHC-Exp-ATLAS-20150101}, typ = {PUB:(DE-HGF)29 / PUB:(DE-HGF)16}, eprint = {1805.03483}, howpublished = {arXiv:1805.03483}, archivePrefix = {arXiv}, SLACcitation = {$\%\%CITATION$ = $arXiv:1805.03483;\%\%$}, UT = {WOS:000440824200001}, doi = {10.1103/PhysRevD.98.032002}, url = {https://bib-pubdb1.desy.de/record/418017}, }