Probing Higgs self-coupling of a classically scale invariant model in e+e → Zhh: Evaluation at physical point

Y. Fujitani, Y. Sumino

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


A classically scale invariant extension of the standard model predicts large anomalous Higgs self-interactions. We compute missing contributions in previous studies for probing the Higgs triple coupling of a minimal model using the process e+e→Zhh. Employing a proper order counting, we compute the total and differential cross sections at the leading order, which incorporate the one-loop corrections between zero external momenta and their physical values. Discovery/exclusion potential of a future e+e collider for this model is estimated. We also find a unique feature in the momentum dependence of the Higgs triple vertex for this class of models.

Original languageEnglish
Pages (from-to)46-51
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publication statusPublished - 2018 Apr 10

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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