Aachen 2019 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 9: Higgs: Erweiterte Modelle

T 9.3: Vortrag

Montag, 25. März 2019, 16:30–16:45, S07

Search for charged Higgs bosons of a Type I 2HDM in the final state with one lepton and four b jets — •David Brunner, Isabell Melzer-Pellmann, and Arathi Ramesh — DESY, Hamburg

The discovery of the Higgs boson at the LHC and various measurements of its coupling to SM particles confirms the predictions of the theoretical frame work of the Higgs mechanism. While in the SM the introduction of one complex scalar doublet is postulated, in more general theories two or more complex scalar doublets are introduced.

In the Two Higgs Doublet Model (2HDM) two complex scalar doublets are postulated, leading to two CP-even scalar Higgs bosons h and H, one CP-odd Higgs boson A and two charged Higgs bosons H^±. Four different types of the model can be studied depending on the coupling of the Higgs doublets to the SM fermions.

This search focuses on a Type I 2HDM model with an inverted scenario, where the H boson is defined as the SM Higgs boson. We investigate a scenario where the decay of the H^± to the h boson and a W^± boson is enhanced, while the h decays predominantly into b quarks and τ leptons. The production mode of the charged Higgs boson in association with one h is studied, where both h bosons each decay into two bjets and the W^± decays leptonically.

The search uses proton-proton collision data recorded by the CMS experiment at the LHC in 2016-18 with a center of mass energy of √s = 13 TeV.