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  • Open Access

Confronting a dilaton model with LHC measurements

J. E. Wu1,* and Q. S. Yan2,1,†

  • *Contact author: wujinger22@mails.ucas.ac.cn
  • †Contact author: yanqishu@ucas.ac.cn
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Phys. Rev. D 113, 055049 – Published 27 March, 2026

DOI: https://doi.org/10.1103/ycxz-bvfn

Abstract

The origin of the Higgs boson (H125), discovered in 2012, remains a mystery. In the metric affine theory (MAT) framework, we study the scalar potential and investigate a couple of scenarios for the symmetry breaking mechanisms with a dilaton model which is derived from the geometry. The LHC constraints for the couplings of Yukawa couplings, Higgs-weak vector bosons and Higgs self-couplings, in this model are examined, which identify the parameter space where the discovered Higgs boson mh=125  GeV can be dilaton-dominant and the features of Higgs self-couplings are explored. It is found that via the measurements of Higgs pair production, the High Luminosity LHC (HL-LHC) running can either confirm or rule out the dilaton dominance.

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Phys. Rev. D 113, 055049– Published 27 March, 2026
  • Received 28 March 2025
  • Accepted 6 March 2026
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