Higgs Physics with the XFEL Compton $\boldsymbol{γγ}$ Collider Concept at $\boldsymbol{\sqrt{s}=125}$ GeV
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866916018112167936 |
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| author | Qureshi, Umar Sohail Barklow, Tim Schwartzman, Ariel |
| author_facet | Qureshi, Umar Sohail Barklow, Tim Schwartzman, Ariel |
| contents | We investigate single Higgs production in $\sqrt{s}=125$ GeV $γγ$ collisions at the X-Ray Free Electron (XFEL) Compton Collider (XCC) concept and present an analysis targeting the major hadronic, semi-leptonic, and fully leptonic final states of the Higgs boson, including $H\to s\overline{s}$. In addition to studying Higgs production at a novel collider concept, our approach couples a novel set transformer-based deep learning framework that acts on particle-flow object point clouds with a genetic algorithm optimizer for signal-background discrimination, yielding significantly higher sensitivity than traditional methods. Our results demonstrate that an XFEL $γγ$ collider can probe the Higgs sector with extremely high precision and enable new physics opportunities, complementary to proposed $e^+e^-$ machines. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_16756 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Higgs Physics with the XFEL Compton $\boldsymbol{γγ}$ Collider Concept at $\boldsymbol{\sqrt{s}=125}$ GeV Qureshi, Umar Sohail Barklow, Tim Schwartzman, Ariel High Energy Physics - Phenomenology High Energy Physics - Experiment We investigate single Higgs production in $\sqrt{s}=125$ GeV $γγ$ collisions at the X-Ray Free Electron (XFEL) Compton Collider (XCC) concept and present an analysis targeting the major hadronic, semi-leptonic, and fully leptonic final states of the Higgs boson, including $H\to s\overline{s}$. In addition to studying Higgs production at a novel collider concept, our approach couples a novel set transformer-based deep learning framework that acts on particle-flow object point clouds with a genetic algorithm optimizer for signal-background discrimination, yielding significantly higher sensitivity than traditional methods. Our results demonstrate that an XFEL $γγ$ collider can probe the Higgs sector with extremely high precision and enable new physics opportunities, complementary to proposed $e^+e^-$ machines. |
| title | Higgs Physics with the XFEL Compton $\boldsymbol{γγ}$ Collider Concept at $\boldsymbol{\sqrt{s}=125}$ GeV |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2605.16756 |