Composite 2-Higgs Doublet Model: strong effects on Higgs pair production
Composite 2-Higgs Doublet Model: strong effects on Higgs pair production
We show how effects of compositeness emerging in a Composite 2-Higgs Doublet Model can enter Standard Model (SM)-like Higgs 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.
hep-ph
Curtis, Stefania De
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Rose, Luigi Delle
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Egle, Felix
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Mühlleitner, Margarete
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Moretti, Stefano
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Sakurai, Kodai
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Curtis, Stefania De
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Rose, Luigi Delle
fae9e612-f9b9-459f-9bff-2cbac09f2fb2
Egle, Felix
363b6cb1-a9dc-4b14-a403-53af17e05835
Mühlleitner, Margarete
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Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Sakurai, Kodai
17f4d17f-2d69-4cf1-a768-6fea026298e6
[Unknown type: UNSPECIFIED]
Abstract
We show how effects of compositeness emerging in a Composite 2-Higgs Doublet Model can enter Standard Model (SM)-like Higgs 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.
Text
2310.10471v1
- Author's Original
Available under License Other.
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Accepted/In Press date: 16 October 2023
Additional Information:
36 pages, 16 figures
Keywords:
hep-ph
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Local EPrints ID: 491635
URI: http://eprints.soton.ac.uk/id/eprint/491635
PURE UUID: b5ad83a8-7cd3-429b-bfb4-b6790a3ac109
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Date deposited: 03 Jul 2024 09:12
Last modified: 12 Jul 2024 01:41
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Contributors
Author:
Stefania De Curtis
Author:
Luigi Delle Rose
Author:
Felix Egle
Author:
Margarete Mühlleitner
Author:
Kodai Sakurai
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