The triple Higgs coupling: a new probe of low-scale seesaw models

Baglio, Julien; Weiland, Cedric

Abstract

The measure of the triple Higgs coupling is one of the major goals of the high-luminosity run of the CERN Large Hadron Collider (HL-LHC) as well as the future colliders, either leptonic such as the International Linear Collider (ILC) or hadronic such as the 100 TeV Future Circular Collider in hadron-hadron mode (FCC-hh). We have recently proposed this observable as a test of neutrino mass generating mechanisms in a regime where heavy sterile neutrino masses are hard to be probed otherwise. We present in this article a study of the one-loop corrected triple Higgs coupling in the inverse seesaw model, taking into account all relevant constraints on the model. This is the first study of the impact on the triple Higgs coupling of heavy neutrinos in a realistic, renormalizable neutrino mass model. We obtain deviations from the Standard Model as large as to ∼ +30% that are at the current limit of the HL-LHC sensitivity, but would be clearly visible at the ILC or at the FCC-hh.

Citation

Baglio, J., & Weiland, C. (2017). The triple Higgs coupling: a new probe of low-scale seesaw models. Journal of High Energy Physics, 2017(4), Article 038. https://doi.org/10.1007/jhep04%282017%29038

• Journal Article Type: Article
• Acceptance Date: Mar 22, 2017
• Online Publication Date: Apr 7, 2017
• Publication Date: Apr 7, 2017
• Deposit Date: May 25, 2017
• Publicly Available Date: May 31, 2017
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Electronic ISSN: 1029-8479
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2017
• Issue: 4
• Article Number: 038
• DOI: https://doi.org/10.1007/jhep04%282017%29038
• Public URL: https://durham-repository.worktribe.com/output/1358337
• Related Public URLs: http://arxiv.org/abs/arXiv:1612.06403