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Chasing the Two-Higgs-Doublet Model via Electroweak Corrections at e+e− Colliders

Pia Bredt1, Tatsuya Banno2, Marius Höfer3, Syuhei Iguro4,5, Wolfgang Kilian1, Yang Ma6, Jürgen Reuter7, and Hantian Zhang8,*

  • *Contact author: hantian.zhang@cern.ch
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Phys. Rev. Lett. 136, 081801 – Published 24 February, 2026

DOI: https://doi.org/10.1103/mnqp-l2h9

Abstract

We present a comprehensive study of Higgs boson production associated with a neutrino pair at e+e− colliders (e+e−→hνν¯) at next-to-leading-order accuracy in both the standard model and the two-Higgs-doublet model. We show that these new physics effects will be observable in total and differential cross sections when compared with theoretical predictions that include electroweak corrections, even in the Higgs alignment limit. This highlights the potential of precision studies at future e+e− colliders for searching new physics.

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Phys. Rev. Lett. 136, 081801– Published 24 February, 2026
  • Received 23 September 2025
  • Accepted 29 January 2026
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