We present a study of triple Higgs boson (3H) production at the International Linear Collider (ILC) within the general Two-Higgs-Doublet Model (2HDM). We compute the production cross-sections at the leading-order for the 3H final states and find values up to sigma ~ 0.1 pb. This result represents a large enhancement with respect to the corresponding MSSM cross-sections, which stay typically at the level of sigma ~ 10^(-6) pb or less. Furthermore, since the 3H cross-sections in the general 2HDM can be of the order of the double Higgs production cross-sections, such 3H processes could be a competitive (if not the dominant) mechanism for Higgs boson production at the ILC. In practice, these 3H events could be identified through the tagging of 6 heavy-quark jet final states and, in this case, they would provide strong evidence of an extended Higgs boson sector -- likely of non-supersymmetric nature.

Triple Higgs boson production at the ILC within a generic Two-Higgs-Doublet Model / G. Ferrera, J. Guasch, D. Lopez Val, J. Sola. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - (2008 Jan 25). ((Intervento presentato al 8. convegno International Symposium on Radiative Corrections: Application of Quantum Field Theory to Phenomenology tenutosi a Firenze nel 2007.

Triple Higgs boson production at the ILC within a generic Two-Higgs-Doublet Model

G. Ferrera;
2008

Abstract

We present a study of triple Higgs boson (3H) production at the International Linear Collider (ILC) within the general Two-Higgs-Doublet Model (2HDM). We compute the production cross-sections at the leading-order for the 3H final states and find values up to sigma ~ 0.1 pb. This result represents a large enhancement with respect to the corresponding MSSM cross-sections, which stay typically at the level of sigma ~ 10^(-6) pb or less. Furthermore, since the 3H cross-sections in the general 2HDM can be of the order of the double Higgs production cross-sections, such 3H processes could be a competitive (if not the dominant) mechanism for Higgs boson production at the ILC. In practice, these 3H events could be identified through the tagging of 6 heavy-quark jet final states and, in this case, they would provide strong evidence of an extended Higgs boson sector -- likely of non-supersymmetric nature.
High Energy Physics, Phenomenology; High Energy Physics, Phenomenology
Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici
25-gen-2008
http://arxiv.org/abs/0801.3907v1
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/363269
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