Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 46: Higgs-Boson (Zerfall in Tau-Leptonen) III

T 46.4: Talk

Tuesday, March 1, 2016, 17:30–17:45, VMP5 HS A

Study of τ-reconstruction effects on a Higgs-CP-measurement at ATLAS — •Michael Hübner, Klaus Desch, Peter Wagner, Philip Bechtle, Christian Grefe, and Maike Hansen — Universität Bonn

CP-mixing in the Higgs-to-fermion couplings is predicted by a number of important Beyond the Standard Model theories such as Supersymmetry, and is so far not excluded by LHC measurements. The mixing angle can be measured in the H→ττ channel, where both taus decay hadronically, via the reconstruction of decay planes spanned by the decay products.

The measurement relies on the 4-momentum reconstruction of the tau decay products and the purity of reconstructing specific decay modes. I will present results of a study of the impact of tau reconstruction effects on the sensitivity of a prospective CP-mixing measurement.