Mainz 2014 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 97: Eingeladene Vorträge 3

T 97.5: Eingeladener Vortrag

Donnerstag, 27. März 2014, 15:45–16:15, RW 1

Searches for high-mass resonances decaying to tau-lepton pairs with the ATLAS detector. — •William Davey — Universität Bonn, Bonn, Germany

Many extensions of the Standard Model predict additional heavy gauge bosons. While searches for such bosons decaying into electrons and muons at the LHC have already probed masses up to ∼3 TeV, lepton universality is not necessarily a requirement. In fact, a number of models, for instance those seeking to explain the large top-quark mass, predict enhanced couplings to third generation fermions. For such models, searches at the LHC in the di-tau decay channel can be more sensitive than for the lighter leptons, despite tau-leptons being more difficult to reconstruct in the hadronic environment. I present results of generic searches for high-mass resonances decaying into tau-lepton pairs using data collected by the ATLAS experiment in Run 1 of the LHC. I also present results from searches for neutral MSSM Higgs bosons decaying into tau-lepton pairs. These searches combined span a huge mass range from ∼100 GeV to ∼2 TeV.