Preprint

PUBDB-2025-03869

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Chasing the two-Higgs-doublet model via electroweak corrections at $e^+e^-$ colliders

Bredt, P. ; Banno, T. ; Höfer, M. ; Iguro, S. ; Kilian, W. ; Ma, Y. ; Reuter, J. (Corresponding author)DESY* ; Zhang, H.

2025

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Please use a persistent id in citations: doi:10.3204/PUBDB-2025-03869

Report No.: CERN-TH-2025-181; DESY-25-121; IRMP-CP3-25-30; KA-TP-28-2025; P3H-25-063; SI-HEP-2025-19; arXiv:2509.05421

Abstract: We present a comprehensive study of Higgs boson production associated with a neutrino pair at $e^+e^-$ colliders ($e^+ e^- \to h \, ν\barν$) at the next-to-leading-order accuracy in both the Standard Model and the two-Higgs-doublet model. We show that new physics effects from the extended Higgs sector can be probed through electroweak corrections, which lead to several percent deviations from the Standard Model predictions in total cross sections and differential distributions, even in the alignment limit. This highlights the potential of precision studies at future $e^+e^-$ colliders for searching new physics.

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)
2. EAJADE - Europe-America-Japan Accelerator Development and Exchange Programme (101086276) (101086276)
3. DFG project G:(GEPRIS)390833306 - EXC 2121: Quantum Universe (390833306) (390833306)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2025

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