Münster 2017 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 33: Suche nach neuen Teilchen 2

T 33.1: Vortrag

Dienstag, 28. März 2017, 11:00–11:15, JUR 2

Identification of boosted Higgs bosons in the search for their pair-production in final states with four b quarks with the ATLAS detector at √s=13 TeV using 36 fb⁻¹ of data — •Merve Sahinsoy and Oleg Brandt — Kirchhoff Institute for Physics, University of Heidelberg

The Higgs sector is one of the least explored regions of the Standard Model (SM) and therefore of high importance in the search for new physics. Many new physics models predict rates of Higgs boson pair-production that are significantly higher than the SM rate. Using 36 fb⁻¹ of data collected by ATLAS detector in 2015 and 2016, this analysis searches for Higgs boson pair-production with two bb⁻ pairs in the final state. The focus of this analysis is the boosted kinematic regime defined by large transverse momenta of the Higgs boson, which aims at fully exploiting the kinematic regime made accessible by the increased centre-of-mass energy in Run II of the LHC. In this extreme kinematic regime, the two b-quark jets from a Higgs boson decay are merged into one large-radius jet. Boosted Higgs boson tagging techniques to separate signal from background are presented in the context of this search, and the impact of recent improvements on the sensitivity of the analysis is discussed.