Searching dark photons using displaced vertices at Belle II - with backgrounds
Dark photons in the MeV to GeV range with kinetic mixing of the order of ≲ 10−4 − 10−3 can be produced in significant numbers at low energy colliders such as Belle II. Their decay length can be macroscopic raising the hope for a fairly clean search via displaced vertices as proposed in [1]. However,...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
07 August 2024
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| In: |
Journal of high energy physics
Year: 2024, Issue: 8, Pages: [1], 1-20 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP08(2024)062 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1007/JHEP08(2024)062 Verlag, kostenfrei, Volltext: https://link.springer.com/article/10.1007/JHEP08(2024)062 
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| Author Notes: | Joerg Jaeckel and Anh Vu Phan |
| Summary: | Dark photons in the MeV to GeV range with kinetic mixing of the order of ≲ 10−4 − 10−3 can be produced in significant numbers at low energy colliders such as Belle II. Their decay length can be macroscopic raising the hope for a fairly clean search via displaced vertices as proposed in [1]. However, even this is not background free. Here, we calculate and discuss problematic backgrounds from displaced photon conversion and discuss their potential impact on the sensitivity. In addition we also briefly consider the dangers of prompt backgrounds. |
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| Item Description: | Gesehen am 17.03.2025 |
| Physical Description: | Online Resource |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP08(2024)062 |