出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：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 crosssections
at the leading-order for the 3H final states and find values up to s ∼ 0.1pb. This result
represents a large enhancement with respect to the corresponding MSSM cross-sections, which
stay typically at the level of s ∼ 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.
