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Composite 2-Higgs doublet model: strong effects on Higgs pair production

De Curtis, Stefania; Rose, Luigi Delle; Egle, Felix 1; Moretti, Stefano; Mühlleitner, Margarete 1; Sakurai, Kodai
1 Institut für Theoretische Physik (ITP), Karlsruher Institut für Technologie (KIT)

Abstract:

We show how effects of compositeness emerging in a Composite 2-Higgs Doublet Model can enter Standard Model (SM)-like Higgs boson pair production at the Large Hadron Collider in both resonant and non-resonant mode. Such effects can arise from modified trilinear Higgs self-couplings and top-Yukawa couplings, as well as from loops of new heavy quarks and additional quartic Higgs-fermion interactions. In the resonant case, significant distortions of the Breit-Wigner shape of a new scalar state decaying into the two SM-like Higgs states may occur due to interference effects amongst not only the SM-like diagrams but also those involving the new heavy quarks. In the non-resonant case, a modification of the underlying line-shape and a local maximum at twice a new heavy quark mass appear simultaneously. We quantify these effects by taking into account the relevant theoretical and latest experimental bounds.

Zugehörige Institution(en) am KIT Institut für Theoretische Physik (ITP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2024
Sprache Englisch
Identifikator ISSN: 1029-8479
KITopen-ID: 1000171949
Erschienen in Journal of High Energy Physics
Verlag Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Band 2024
Heft 6
Seiten Art.-Nr.: 63
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Vorab online veröffentlicht am 12.06.2024
Nachgewiesen in arXiv
OpenAlex
Scopus
Dimensions
Web of Science

Verlagsausgabe §
DOI: 10.5445/IR/1000171949
Veröffentlicht am 25.06.2024
Seitenaufrufe: 28
seit 26.06.2024
Downloads: 9
seit 29.06.2024
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