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T: Fachverband Teilchenphysik

T 74: Higgs: Erweiterte Modelle II / Suchen

T 74.10: Vortrag

Donnerstag, 22. März 2018, 18:45–19:00, Philo-HS2

Search for heavy Vh resonances with the ATLAS detector in the final state with boosted h → bb decays — •Andreas Hönle, Sandra Kortner, Hubert Kroha, Stefan Maschek, and Felix Müller — 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 searches now move towards higher masses, since the lighter heavy resonance candidates have been widely excluded with present data. Therefore, the topologies with boosted decay products become increasingly important. The b quark from such boosted Higgs boson decays are often nearly collinear, such that the two corresponding b jets oftentimes merge into a single large-radius jet.

In this talk, the optimized techniques for the reconstruction of boosted h → bb decays are introduced, and their use in the search for heavy Vh resonances will be explained.