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Bonn 2020 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 11: Higgs: bosonic decays and quantum numbers

T 11.1: Vortrag

Montag, 30. März 2020, 16:30–16:45, H-HS XII

Search for Di-Higgs production in the bbγγ final state with the ATLAS detector — •Florian Beisiegel, Jochen Dingfelder, Tatjana Lenz, and Norbert Wermes — Physikalisches Institut, Uni Bonn

The discovery of the Higgs boson in 2012 was a great success of modern particle physics since it served as a proof of the Higgs mechanism introduced in 1964. One focus of the current particle physics experiments at the LHC is the measurement of the Higgs properties, such as its coupling strengths to fundamental particles. In addition to the coupling of the Higgs boson to fermions and gauge bosons, the Higgs mechanism also predicts a Higgs self-coupling. The triple-Higgs self-coupling can be measured in the di-Higgs production channel (non-resonant production).

Di-Higgs analyses also facilitate the search for new heavy particles that decay to two Higgs bosons (resonant production).

This talk presents a search for Di-Higgs production in the bbγγ final state using 139 fb−1 of proton-proton collisions at 13 TeV recorded with the ATLAS detector. The analysis aims to measure the non-resonant SM HH production cross section and the Higgs boson self-coupling strength as well as searching for resonant Di-Higgs production.

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