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Higgs Pair Production as a Signal of Enhanced Yukawa Couplings

Bauer, Martin; Carena, Marcela; Carmona, Adrián

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Authors

Marcela Carena

Adrián Carmona



Abstract

We present a nontrivial correlation between the enhancement of the Higgs-fermion couplings and the Higgs pair production cross section in two Higgs doublet models with a flavor symmetry, with implications for LHC searches. This symmetry suppresses flavor-changing neutral couplings of the Higgs boson and allows for a partial explanation of the hierarchy in the Yukawa sector. After taking into account the constraints from electroweak precision measurements, Higgs coupling strength measurements, and unitarity and perturbativity bounds, we identify an interesting region of parameter space leading to enhanced Yukawa couplings as well as enhanced di-Higgs gluon fusion production at the LHC reach. This effect is visible in both the resonant and nonresonant contributions to the Higgs pair production cross section. We encourage dedicated searches based on differential distributions as a novel way to indirectly probe enhanced Higgs couplings to light fermions.

Citation

Bauer, M., Carena, M., & Carmona, A. (2018). Higgs Pair Production as a Signal of Enhanced Yukawa Couplings. Physical Review Letters, 121(2), Article 021801. https://doi.org/10.1103/physrevlett.121.021801

Journal Article Type Article
Online Publication Date Jul 12, 2018
Publication Date Jul 12, 2018
Deposit Date Nov 27, 2018
Publicly Available Date Mar 28, 2024
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 121
Issue 2
Article Number 021801
DOI https://doi.org/10.1103/physrevlett.121.021801

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.





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