Münster 2017 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 33: Suche nach neuen Teilchen 2

T 33.5: Vortrag

Dienstag, 28. März 2017, 12:00–12:15, JUR 2

First 13 TeV search for new heavy spin-0 resonances decaying into top quarks at CMS — •Afiq Anuar, Kelly Beernaert, Alexander Grohsjean, Christian Schwanenberger, and Gerrit Van Onsem — Deutsches Elektronen Synchrotron (DESY), Notkestrasse 85, D-22607 Hamburg

Many beyond the Standard Model (SM) theories include an extended Higgs sector. Being the most massive particle in the SM, the top quark is of primary interest as the main probe with which these theories can be subjected to experimental scrutiny. Here a search for a heavy spin-0 resonance decaying into a top quark pair in the dilepton channel where both W bosons from the top decays decay leptonically is presented. The search is performed using data taken by the CMS experiment in 2016 at 13 TeV. Both the pseudoscalar A and scalar H scenarios, including their interference effects with SM top pair production process are taken into account. The search exploits simultaneously the peak-dip structure of the top pair mass spectrum and spin correlation observables for improved sensitivity.