Würzburg 2018 – scientific programme

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T: Fachverband Teilchenphysik

T 74: Higgs: Erweiterte Modelle II / Suchen

T 74.9: Talk

Thursday, March 22, 2018, 18:30–18:45, Philo-HS2

Search for a light CP-odd Higgs boson decaying into a pair of taus — •Paul Moder, Dirk Duschinger, Wolfgang Mader, and Arno Straessner — IKTP Dresden, Deutschland

In 2012 the Standard Model was confirmed with the discovery of the Higgs boson and since then its predictions have often been proven to be correct when compared to experiments. However there are still some phenomena it can not explain, for example the anomalous magnetic moment of the muon, which shows significant deviations in the experiment. These deviations could be explained in the context of a 2 Higgs Doublet Model (2HDM). This model predicts a second Higgs doublet which leads to four additional Higgs bosons, one of them CP-odd. This model contains several free parameters. Of particular interest are the mass of the CP-odd Higgs boson and the couplings to charged leptons and up type quarks.

In this talk, an analysis for the search for a light CP-odd Higgs boson is presented. In the analysis the Higgs boson is produced via gluon fusion because of its strong coupling to top quarks. The mass range for the CP-odd Higgs boson lies between 60GeV and 120GeV with decays into a pair of tau leptons, where both tau leptons decay leptonically, one into an electron, one into a muon.