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Higgs Pair Production and Triple Higgs Couplings at the LHC in the 2HDM

Heinemeyer, Sven; Mühlleitner, Margarete 1; Radchenko, Kateryna; Weiglein, Georg 2
1 Institut für Theoretische Physik (ITP), Karlsruher Institut für Technologie (KIT)
2 Deutsches Elektronen-Synchrotron (DESY)

Abstract:

Gaining information about the shape of the Higgs potential is one of the main goals of particle
physics for the coming years. The trilinear Higgs self-interactions can directly be probed via Higgs
pair production, which at the LHC happens dominantly through gluon fusion. In models with
extended Higgs sectors the trilinear self-coupling of the detected Higgs boson can strongly deviate
from the prediction of the Standard Model (SM) due to large loop corrections even in scenarios
where all couplings to gauge bosons and fermions are very close to their SM values. Furthermore,
triple Higgs couplings involving additional Higgs bosons can have an important impact on the pair
production process of the SM-like Higgs boson via the resonant contribution of the heavy Higgs.
We study the phenomenological implications for Higgs pair production in the framework of the
Two Higgs Doublet Model (THDM). We analyze the potential sensitivity to both, the SM-like
trilinear Higgs self-coupling and the beyond-the-SM triple Higgs coupling involving a resonantly
produced CP-even Higgs. In particular, we focus on the theoretical predictions of two observable
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Verlagsausgabe §
DOI: 10.5445/IR/1000170301
Veröffentlicht am 26.04.2024
Cover der Publikation
Zugehörige Institution(en) am KIT Deutsches Elektronen-Synchrotron (DESY)
KIT-Bibliothek (BIB)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 21.03.2024
Sprache Englisch
Identifikator ISSN: 1824-8039
KITopen-ID: 1000170301
Erschienen in The European Physical Society Conference on High Energy Physics (EPS-HEP2023), Hamburg, 21st-25th August 2023
Veranstaltung European Physical Society Conference on High Energy Physics (EPS-HEP 2023), Hamburg, Deutschland, 21.08.2023 – 25.08.2023
Verlag Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Seiten Art.-Nr.: 411
Serie Proceedings of Science (PoS) ; 449
Vorab online veröffentlicht am 09.02.2024
Nachgewiesen in Scopus
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