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T: Fachverband Teilchenphysik

T 28: Higgs-Zerfälle in Fermionen I

T 28.10: Vortrag

Dienstag, 26. März 2019, 18:20–18:35, H04

Measurement of H → τ_hadτ_had at √s=13 TeV with the ATLAS Experiment — •Timo Dreyer, Stan Lai, and Michel Janus — Georg-August-Universität Göttingen

The H→ττ process is currently the only observed leptonic decay channel of the Higgs boson at the LHC. The ATLAS experiment performed a cut based analysis in this decay channel on 36.1 fb⁻¹ of data collected in 2015 and 2016 at √s=13 TeV, measuring the cross section times branching ratio for pp → H → ττ.

The process is divided in sub-channels according to the decay of the τ-leptons into lighter leptons or hadrons. The Higgs production cross sections for the gluon gluon fusion and vector boson fusion production modes are extracted from a maximum likelihood fit to data on the distribution of the reconstructed mass m_ττ from the two τ-leptons.

This talk will discuss the recently published ATLAS results with a focus on the di-hadronic sub-channel and give an outlook for the analysis on the full 13 TeV dataset