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Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 104: Suche nach neuen Teilchen 5

T 104.3: Talk

Thursday, March 30, 2017, 17:15–17:30, JUR 2

Search for heavy resonances decaying to a neutrino and a tau lepton using hadronic tau decays at ATLAS — •Christos Vergis, William Davey, and Jochen Dingfelder — Physikalisches Institut, Nussallee 12, Bonn

Many models beyond the Standard Model predict the existence of new heavy, charged (W) and neutral (Z) gauge bosons. In case of leptonic W decays, the signature in the detector is a high-pT lepton and large missing transverse energy from the emitted neutrino. Although searches for W→ (e / µ)ν are more sensitive than W→ τ ν for a universal coupling to leptons, decays with a tau lepton are well suited to investigate models in which the W bosons couple predominantly to third generation fermions.

This talk presents preparations of a search for W→ τ ν decays with a hadronically decaying tau lepton, using 2015 and 2016 pp-collision data at a center-of-mass energy of √s=13 TeV collected with the ATLAS detector at the Large Hadron Collider. The expected limits to the cross-sections are derived from simulation considering a Sequential Standard Model scenario, where the W bosons have the same couplings as the Standard Model W bosons.

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