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Revisiting the Higgs-mass calculation in the scale-invariant THDM

Pietro Slavich*

  • *Contact author: slavich@lpthe.jussieu.fr
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Phys. Rev. D 113, 095022 – Published 14 May, 2026

DOI: https://doi.org/10.1103/bsbp-clwb

Abstract

We revisit the one-loop calculation of the Higgs-mass spectrum of the scale-invariant two-Higgs-doublet model, relying on a direct calculation of the relevant Feynman diagrams. We highlight a number of incorrect assumptions in earlier calculations that relied on the effective-potential approach. In contrast with the earlier findings, we show that the one-loop corrections can have an effect of O(10%) on the predictions for the beyond the standard model (BSM) Higgs masses, and they can also induce non-negligible mixing between the standard model–like and BSM states in the neutral scalar sector.

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Phys. Rev. D 113, 095022– Published 14 May, 2026
  • Received 3 March 2026
  • Accepted 7 April 2026
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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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