Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 67: Higgs-Boson (assoziierte Produktion) III

T 67.9: Talk

Wednesday, March 2, 2016, 18:45–19:00, VMP5 HS B1

Heavy Resonance Searches With Run 2 ATLAS-Data Using H→ bb Final States — •Elisabeth Schopf, Götz Gaycken, Stephan Hageböck, Ruth Jacobs, Vadim Kostyukhin, Tatjana Lenz, Eckhard von Toerne, and Norbert Wermes — Physikalisches Institut, Nussallee 12, 53115 Bonn

After an upgrade phase of two years the LHC restarted its operation in spring of 2015. In this Run 2 the protons have a collision energy of 13 TeV instead of 8 TeV in Run 1. This new energy regime allows for searches for so far undiscovered heavy particles. These heavy particles could decay into final states including the Higgs boson. The Higgs boson was successfully discovered by the ATLAS and CMS experiment in 2012 and may now be used as a tool for new physics searches.

This presentation will focus on heavy resonance searches using H→ bb final states. Since the Higgs decay into bottom quarks is the predominant decay channel of the Higgs boson it is a promising final state. I will introduce analysis techniques and multivariate methods that can be used to improve the sensitivity of the search. This presentation will also give an outlook for the standard model H→ bb search because a significant signal could not be established in Run 1 and will be probed again in Run 2.