Aachen 2019 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 53: Suche nach Neuen Teilchen III

T 53.2: Vortrag

Mittwoch, 27. März 2019, 16:15–16:30, H07

Search for heavy Vh resonances with the ATLAS detector in the final state with boosted h → bb decays — •Andreas Hönle, Dominik Duda, Sandra Kortner, Hubert Kroha, and Stefan Maschek — Max-Planck-Institut für Physik, München, Deutschland

Many extensions of the Standard Model (SM) predict the existence of heavy resonances that decay into boson pairs. A process with promising search prospects is the decay of a heavy particle into a SM vector boson V (≡ W, Z) and the SM Higgs boson h with a subsequent leptonic V decay and a Higgs boson decay into a pair of b quarks.

The final Run 2 ATLAS dataset of approximately 140 fb⁻¹, recorded at √s = 13 TeV, allows for probing regions of the process’ phase space that were not accessible before. Consequently, new analysis strategies are being implemented, aiming to maximise the sensitivity in those regions.

This talk presents the strategy to search for Vh resonances in the semileptonic decay channel based on the Run 2 ATLAS dataset. It will highlight differences to the previously published search which was based on a subset of the Run 2 data recorded in 2015 and 2016.