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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2511.23149 |
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| _version_ | 1866913057117044736 |
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| author | Del Vecchio, Andrea Eysermans, Jan Gouskos, Loukas Iakovidis, George Maloizel, Alexis Marchiori, Giovanni Selvaggi, Michele |
| author_facet | Del Vecchio, Andrea Eysermans, Jan Gouskos, Loukas Iakovidis, George Maloizel, Alexis Marchiori, Giovanni Selvaggi, Michele |
| contents | The expected precision at the FCC-ee on the product $σ\times\mathcal{B}(H\rightarrow b\bar{b}, c\bar{c},s\bar{s},gg)$ of Higgs boson production cross sections times branching ratios of hadronic decays is presented. This study provides the first comprehensive determination of all major hadronic Higgs decay modes in a combined fit at future $e^+ e^-$ colliders, using both Higgs-strahlung ($ZH$) and Vector boson fusion ($ν\barν H$) production processes, with a full treatment of interference effects in the $ν\barν jj$ final state. It assumes four identical IDEA detectors collecting $e^+e^-$ collisions at $\sqrt{s}=240$ and $365\,$GeV. The combination of all channels across both energies, with full covariance between production and decay modes, yields a production cross-section times branching-ratio precision at the percent to per-mil level for the dominant hadronic final states ($b\bar{b}, c\bar{c},gg$). These results provide a comprehensive input to the determination of Higgs coupling projections at the FCC-ee, and they establish for the first time sensitivity to the rare decay $H\rightarrow s\bar{s}$, demonstrating that FCC-ee has the potential to provide evidence of the strange-quark Yukawa coupling. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_23149 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Precision Measurements of Higgs Hadronic Decay Modes at the FCC-ee Del Vecchio, Andrea Eysermans, Jan Gouskos, Loukas Iakovidis, George Maloizel, Alexis Marchiori, Giovanni Selvaggi, Michele High Energy Physics - Experiment Applied Physics Data Analysis, Statistics and Probability The expected precision at the FCC-ee on the product $σ\times\mathcal{B}(H\rightarrow b\bar{b}, c\bar{c},s\bar{s},gg)$ of Higgs boson production cross sections times branching ratios of hadronic decays is presented. This study provides the first comprehensive determination of all major hadronic Higgs decay modes in a combined fit at future $e^+ e^-$ colliders, using both Higgs-strahlung ($ZH$) and Vector boson fusion ($ν\barν H$) production processes, with a full treatment of interference effects in the $ν\barν jj$ final state. It assumes four identical IDEA detectors collecting $e^+e^-$ collisions at $\sqrt{s}=240$ and $365\,$GeV. The combination of all channels across both energies, with full covariance between production and decay modes, yields a production cross-section times branching-ratio precision at the percent to per-mil level for the dominant hadronic final states ($b\bar{b}, c\bar{c},gg$). These results provide a comprehensive input to the determination of Higgs coupling projections at the FCC-ee, and they establish for the first time sensitivity to the rare decay $H\rightarrow s\bar{s}$, demonstrating that FCC-ee has the potential to provide evidence of the strange-quark Yukawa coupling. |
| title | Precision Measurements of Higgs Hadronic Decay Modes at the FCC-ee |
| topic | High Energy Physics - Experiment Applied Physics Data Analysis, Statistics and Probability |
| url | https://arxiv.org/abs/2511.23149 |