Dortmund 2021 – scientific programme
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T: Fachverband Teilchenphysik
T 26: Higgs physics (theory)
T 26.5: Talk
Tuesday, March 16, 2021, 17:00–17:15, Ta
Investigating triple Higgs production in and beyond the SM at proton-proton colliders. — •Gilberto Tetlalmatzi-Xolocotzi1, Andreas Papaefstathiou2, Tania Robens3, and Marco Zaro4 — 1University of Siegen, Walter-Flex-Str. 3, 57068 Siegen — 2Higgs Centre for Theoretical Physics, University of Edinburgh, Peter Guthrie Tait Road, Edinburgh EH9 3FD, UK. — 3Ruder Bokovic Institute, Bijenicka cesta 54, 10000 Zagreb, Croatia — 4Tif Lab, Dipartimento di Fisica, Università di Milano and INFN, Sezione di Milano, 20133 Milano, Italy
In this talk we will discuss the production of three Higgs bosons in the LHC and at a proton-proton collider running at a centre-of-mass energy of 100 TeV. We will argue that the seemingly challenging 6-botton jets final state is a very good candidate to investigate triple Higgs production within and beyond the SM in proton-proton colliders.
In particular we will consider three different scenarios: one in which the triple and quartic Higgs boson self-couplings are not affected by new physics phenomena besides the Standard Model (SM) and in addition, we will explore two possible SM extensions by one and two new scalars. We will show that a 100 TeV machine can impose competitive constraints on the quartic coupling in the SM-like scenario. In the case of the scalar extensions of the SM, we will show that large significances can be obtained in the LHC and the 100 TeV collider while obeying current theoretical and experimental constraints including a first order electroweak phase transition.