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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2509.14148 |
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| _version_ | 1866912590780694528 |
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| author | Berggren, Mikael Bliewert, Bryan List, Jenny Ntounis, Dimitris Suehara, Taikan Tian, Junping Torndal, Julie Munch Vernieri, Caterina |
| author_facet | Berggren, Mikael Bliewert, Bryan List, Jenny Ntounis, Dimitris Suehara, Taikan Tian, Junping Torndal, Julie Munch Vernieri, Caterina |
| contents | This contribution summarizes the update of the projections for the determination of the tri-linear Higgs self-coupling from di-Higgs production at future $e^+e^-$ colliders. In particular, we will present an update of the analysis of $ZHH$ production at 500 GeV in detailed simulations of the ILD concept, covering the $HH\rightarrow b\bar{b}b\bar{b}$ and $Z\rightarrow q\bar{q} / e^+e^- / μ^+μ^- /ν\barν$ channels. Based on the experience of previous analyses, we will extrapolate these to contain some of the remaining decay modes, e.g. $HH\rightarrow b\bar{b} WW^*$ or $Z\rightarrow τ^+τ^-$, as well as the contribution from the $WW$ fusion production mode. We will study the dependency of the results on the centre-of-mass energy (in particular discussing 550 GeV and 1 TeV) as well as on the value of the trilinear coupling realised in nature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_14148 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Update of the Higgs Self-coupling Projections from Di-Higgs Production in Detailed Simulation of the ILD Concept Berggren, Mikael Bliewert, Bryan List, Jenny Ntounis, Dimitris Suehara, Taikan Tian, Junping Torndal, Julie Munch Vernieri, Caterina High Energy Physics - Experiment This contribution summarizes the update of the projections for the determination of the tri-linear Higgs self-coupling from di-Higgs production at future $e^+e^-$ colliders. In particular, we will present an update of the analysis of $ZHH$ production at 500 GeV in detailed simulations of the ILD concept, covering the $HH\rightarrow b\bar{b}b\bar{b}$ and $Z\rightarrow q\bar{q} / e^+e^- / μ^+μ^- /ν\barν$ channels. Based on the experience of previous analyses, we will extrapolate these to contain some of the remaining decay modes, e.g. $HH\rightarrow b\bar{b} WW^*$ or $Z\rightarrow τ^+τ^-$, as well as the contribution from the $WW$ fusion production mode. We will study the dependency of the results on the centre-of-mass energy (in particular discussing 550 GeV and 1 TeV) as well as on the value of the trilinear coupling realised in nature. |
| title | Update of the Higgs Self-coupling Projections from Di-Higgs Production in Detailed Simulation of the ILD Concept |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2509.14148 |