English

$W$-Boson Mass Anomaly from Scale Invariant 2HDM

High Energy Physics - Phenomenology 2022-10-13 v2

Abstract

The recently reported measurement of the WW-boson mass by CDF-II collaboration is significantly heavier than that of the Standard Model prediction. We study this anomaly in the scale invariant Two-Higgs-Doublet-Model (SI-2HDM) with a Z2\mathbb{Z}_2 symmetry to avoid the flavor-changing-neutral-current (FCNC). In this scenario the Higgs particle is the classically massless scalon in the SI-2HDM gaining its mass by radiative corrections, hence being naturally light. Moreover, because of the scale symmetry the model is more predictive respect to the generic 2HDM. We show that the oblique parameters depending on the masses of the charged and CP-even (CP-odd) neutral scalar components of the SI-2HDM denoted respectively by MH±M_{H^\pm} and MhM_h (MAM_A), are large enough to accommodate the WW-boson mass anomaly in the model. There are as well viable regions in the mass spectrum of the SI-2HDM that evade the experimental bounds from colliders on the charged Higgs and neutral scalars.

Keywords

Cite

@article{arxiv.2204.09001,
  title  = {$W$-Boson Mass Anomaly from Scale Invariant 2HDM},
  author = {Karim Ghorbani and Parsa Ghorbani},
  journal= {arXiv preprint arXiv:2204.09001},
  year   = {2022}
}

Comments

V2: discussion on perturbativity and unitarity added, new references added, published version

R2 v1 2026-06-24T10:52:22.126Z