Potential for the discovery of the protophobic boson at the STCF
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866910267155152896 |
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| author | M., Althaf Bandyopadhyay, Triparno |
| author_facet | M., Althaf Bandyopadhyay, Triparno |
| contents | We study the morphology of the main drift chamber (MDC) to be built around the collision point of the proposed Super tau-charm facility (STCF), to check its suitability for discovering the 17 MeV protophobic boson (X17 boson), hypothesised as a solution to the persistent ATOMKI nuclear-transition anomalies. Using the TrackEff framework, we perform detector-level simulations of the STCF MDC, and evaluate displaced-vertex sensitivities towards the protophobic boson, across the relevant mass-coupling parameter space. We study benchmark scenarios with visible and dark decay channels to perform likelihood-based significance estimates in order to determine the 5~$σ$ discovery reach for the protophobic boson. We find that STCF can potentially discover the protophobic boson while tolerating $\sim 10^4$ background events for specific regions of the parameter space. Our analysis establishes the first feasibility study of displaced light-boson searches at the STCF, motivating a full Geant-4 simulation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_10084 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Potential for the discovery of the protophobic boson at the STCF M., Althaf Bandyopadhyay, Triparno High Energy Physics - Phenomenology High Energy Physics - Experiment We study the morphology of the main drift chamber (MDC) to be built around the collision point of the proposed Super tau-charm facility (STCF), to check its suitability for discovering the 17 MeV protophobic boson (X17 boson), hypothesised as a solution to the persistent ATOMKI nuclear-transition anomalies. Using the TrackEff framework, we perform detector-level simulations of the STCF MDC, and evaluate displaced-vertex sensitivities towards the protophobic boson, across the relevant mass-coupling parameter space. We study benchmark scenarios with visible and dark decay channels to perform likelihood-based significance estimates in order to determine the 5~$σ$ discovery reach for the protophobic boson. We find that STCF can potentially discover the protophobic boson while tolerating $\sim 10^4$ background events for specific regions of the parameter space. Our analysis establishes the first feasibility study of displaced light-boson searches at the STCF, motivating a full Geant-4 simulation. |
| title | Potential for the discovery of the protophobic boson at the STCF |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2512.10084 |