<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Search for new physics in rare four-body charm decays"^^ . "This dissertation presents a search for physics beyond the Standard Model in D0->π+π-μ+μ−und D0->K+K−μ+μ− decays at the LHCb experiment. These rare four-body decays of neutral charm mesons receive contributions from electroweak flavour-changing neutral current c->ul+l− transitions and are unique probes for potential new heavy degrees of freedom and for additional sources of CP violation in the up-type quark sector. Using a sample of proton-proton collisions corresponding to an integrated luminosity of 2 fb−1 recorded at a center-of-mass energy of 8TeV in 2012, the first observation of D0->π+π-μ+μ−und D0->K+K−μ+μ− decays is reported. Furthermore, their branching fractions are measured. With an increased data set, corresponding to an integrated luminosity of 5 fb−1 and recorded at center-of-mass energies of 7, 8 and 13TeV in the years 2011-2016, the first measurement of the CP asymmetry ACP , the forward-backward asymmetry in the lepton system AFB and the triple-product asymmetry A2ϕ in these decays is presented. All observables are also investigated as functions of the dimuon mass. The results are consistent with Standard Model predictions."^^ . "2019" . . . . . . . "Dominik"^^ . "Mitzel"^^ . "Dominik Mitzel"^^ . . . . . . "Search for new physics in rare four-body charm decays (PDF)"^^ . . . "Dissertation_Mitzel.pdf"^^ . . . "Search for new physics in rare four-body charm decays (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Search for new physics in rare four-body charm decays (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Search for new physics in rare four-body charm decays (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Search for new physics in rare four-body charm decays (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Search for new physics in rare four-body charm decays (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #25790 \n\nSearch for new physics in rare four-body charm decays\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . .