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T: Fachverband Teilchenphysik
T 30: Higgs: BSM
T 30.7: Vortrag
Montag, 9. März 2015, 18:15–18:30, K.11.23 (HS 32)
Search for Charged Higgs using Boosted Top Tagging — Elin Bergeaas Kuutmann1, Janet Dietrich2, Sergio Grancagnolo2, •Geoffrey Herbert2, Heiko Lacker2, Andrei Nikiforov2, and Martin Zur Nedden2 — 1Uppsala Universitet — 2Humboldt Universität zu Berlin
Charged Higgs bosons (H±) are predicted by several BSM theories including the Two Higgs Doublet model. The inclusion of an extra Higgs doublet is a simple extension to the standard model and occurs naturally in Supersymmetry. Current search limits for H± are heavily dependent upon chosen values of tan(β), although they currently favour increasingly heavy H± masses. Charged Higgs bosons with masses much greater than that of the top quark could be produced with noticeable cross sections at the LHC. Their large masses allow for preferential decay to Top and Bottom quarks which may become boosted with increasing parent particle mass. Boosted Top Tagging techniques could be useful in searching for H±, however such particles have a very busy production and decay topology (multiple Top and Bottom quarks). Complex search environments are a new challenge for Boosted Top Tagging techniques and new methods of object reconstruction need to be explored to optimise search strategies. In this talk, an analysis strategy using HEPTopTagger conducted in ATLAS is presented.