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Higgs-Boson Decays: Updates

by Emanuele Bagnaschi, Lisa Biermann, Michael Spira

Submission summary

Authors (as registered SciPost users): Emanuele Angelo Bagnaschi · Lisa Biermann · Michael Spira
Submission information
Preprint Link: https://arxiv.org/abs/2510.24658v3  (pdf)
Date submitted: Jan. 21, 2026, 11:09 a.m.
Submitted by: Emanuele Angelo Bagnaschi
Submitted to: SciPost Physics Community Reports
 for consideration in Collection:
Ontological classification
Academic field: Physics
Specialties:
  • High-Energy Physics - Phenomenology
Approach: Theoretical

Abstract

In this contribution, new developments for the Standard Model Higgs-boson decays will be summarized. This addresses extensions of the grids used by {\tt Hdecay} to implement finite NLO mass effects for $H\to gg$ as well as explicit numbers for the branching fraction for the strange-Yukawa induced part of $H\to s\bar s$ together with the related uncertainties. In addition, first results of the strong and weak Dalitz decays of the Higgs-boson decays $H\to s\bar s + g/γ$ are presented. The Dalitz decays define the separation between the Yukawa-induced part and the continuum, that is not induced by the strange-Yukawa coupling, and thus pave the way towards a solid determination of the strange-Yukawa coupling at future $e^+e^-$ colliders, but will also be relevant for solid bounds on the strange-Yukawa coupling at the LHC.

Author comments upon resubmission

Modified as per our latest response to the referee.

List of changes

  • Modified the text in the caption of fig. 1.
  • Added new curves to fig. 3 right.
Current status:
Voting in preparation

Reports on this Submission

Report #1 by Anonymous (Referee 1) on 2026-1-21 (Invited Report)

Report

The authors have modified the caption of figure 1 and added the missing curves for the partial contributions in figure 3. On the other hand, they have sidestepped my suggestion that they show how the top and bottom contributions are combined in $\Delta E$.

It is not clear to me why the first sentence of the caption of figure 1 still refers to the top-mass effects only, but I do not believe that this minor issue warrants a further iteration of the review process. I will thus recommend that the paper be published in SciPost.

Recommendation

Publish (meets expectations and criteria for this Journal)

  • validity: -
  • significance: -
  • originality: -
  • clarity: -
  • formatting: -
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