Hamburg 2016 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 68: Suche nach Supersymmetrie III (Hadronische, Tau, Photon Endzustände)

T 68.4: Vortrag

Mittwoch, 2. März 2016, 17:30–17:45, VMP5 HS B2

Reconstruction and Identification of Boosted Tau Pair Topologies in ATLAS — •David Kirchmeier — IKTP, TU Dresden, Germany

Decays that involve a pair of tau leptons in the final state are important channels for the search for heavy resonances, which are predicted by theories that go beyond the Standard Model of particle physics. With the restart of LHC in 2015 higher energies and particle masses will be accessible for these processes. Thus, in particular the understanding of highly boosted tau pairs in the high energy region is essential for the search for new physics. With the current approach of tau reconstruction it is not possible to reconstruct di-tau topologies with low spatial separation, corresponding to a di-tau p_T ≳ 500 GeV. A dedicated di-tau reconstruction algorithm has been developed, extending the accessible di-tau p_T up to 1200 GeV. Additionally, a multi-variate di-tau identification algorithm is under development which is able to suppress the background of QCD jets with high efficiency.