Lepton flavor violation in Higgs boson decays at the HL-LHC
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| author | Arroyo-Ureña, M. A. Herrera-Chacón, E. A. Melendez-Hernández, Iran Rosado-Navarro, S. |
| author_facet | Arroyo-Ureña, M. A. Herrera-Chacón, E. A. Melendez-Hernández, Iran Rosado-Navarro, S. |
| contents | We explore the discovery potential for lepton flavor-violating Higgs boson decays, $h \to \ell_i \ell_j$ ($\ell_i \neq \ell_j$; $\ell = e, μ, τ$), in proton-proton collisions. The analysis is performed within a Froggatt-Nielsen framework, which offers a well-motivated theoretical mechanism for such processes. By performing a systematic scan over the phenomenologically viable parameter space, we identify regions that can yield observable signatures at the High-Luminosity LHC (HL-LHC). For an integrated luminosity of $\mathcal{L}_{\rm int} \gtrsim 1000~\text{fb}^{-1}$, we project that the channels $h \to eμ$ and $h \to τμ$ (with $τ^{\pm} \to π^{\pm} ν_τ$) could reach the $5σ$ discovery threshold, while $h \to τe$ remains inaccessible even at $3000~\text{fb}^{-1}$. Our results highlight the unique capability of the HL-LHC to probe new physics through searches for rare Higgs decays. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_19337 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Lepton flavor violation in Higgs boson decays at the HL-LHC Arroyo-Ureña, M. A. Herrera-Chacón, E. A. Melendez-Hernández, Iran Rosado-Navarro, S. High Energy Physics - Phenomenology We explore the discovery potential for lepton flavor-violating Higgs boson decays, $h \to \ell_i \ell_j$ ($\ell_i \neq \ell_j$; $\ell = e, μ, τ$), in proton-proton collisions. The analysis is performed within a Froggatt-Nielsen framework, which offers a well-motivated theoretical mechanism for such processes. By performing a systematic scan over the phenomenologically viable parameter space, we identify regions that can yield observable signatures at the High-Luminosity LHC (HL-LHC). For an integrated luminosity of $\mathcal{L}_{\rm int} \gtrsim 1000~\text{fb}^{-1}$, we project that the channels $h \to eμ$ and $h \to τμ$ (with $τ^{\pm} \to π^{\pm} ν_τ$) could reach the $5σ$ discovery threshold, while $h \to τe$ remains inaccessible even at $3000~\text{fb}^{-1}$. Our results highlight the unique capability of the HL-LHC to probe new physics through searches for rare Higgs decays. |
| title | Lepton flavor violation in Higgs boson decays at the HL-LHC |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2511.19337 |