Würzburg 2018 – scientific programme

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T: Fachverband Teilchenphysik

T 27: Suche nach Physik jenseits des Standardmodels II

T 27.3: Talk

Tuesday, March 20, 2018, 17:00–17:15, Philo-HS4

Search for light resonances in b-quark jet pairs in association with a jet from initial state radiation using boosted topologies with the ATLAS detector — •Merve Sahinsoy and Oleg Brandt — KIRCHHOFF INSTITUTE FOR PHYSICS, HEIDELBERG

Many models of new physics predict new particles with significant couplings to b quarks, including resonances which also couple to dark matter particles. The resulting hadronic final states at low resonance masses represent a particular experimental challenge due to the large cross-section of standard model backgrounds and the resulting bandwidth limitations. This challenge can be overcome by searching for b quark pairs from the resonance decay reconstructed as a single large-radius jet which recoils against a jet from initial state radiation. This approach is also sensitive to standard model Higgs boson production at high transverse momenta. In this talk, the analysis strategy will be presented together with the recent optimisation studies on the identification of Higgs boson decays to a b-quark pair in the boosted regime using large-radius jets.