Probing dark sectors with long-lived particles at belle II
We propose a new search for light scalar singlets in rare meson decays. For tiny interactions, the scalar is long-lived at detector scales and decays into displaced pairs of leptons or light mesons. We show that Belle II has a remarkable potential to probe scalars in the GeV range with couplings as...
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| Main Authors: | , , |
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| Format: | Article (Journal) Chapter/Article |
| Language: | English |
| Published: |
8 Nov 2019
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| In: |
Arxiv
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| Online Access: | Verlag, Volltext: http://arxiv.org/abs/1911.03490
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| Author Notes: | Anastasiia Filimonova, Ruth Schäfer, Susanne Westhoff |
| Summary: | We propose a new search for light scalar singlets in rare meson decays. For tiny interactions, the scalar is long-lived at detector scales and decays into displaced pairs of leptons or light mesons. We show that Belle II has a remarkable potential to probe scalars in the GeV range with couplings as small as $10^{-5}$. The predicted sensitivity is higher than at the long-baseline experiments FASER and NA62. We also investigate signatures of invisibly decaying scalars in rare meson decays with missing energy. |
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| Item Description: | Gesehen am 19.02.2020 |
| Physical Description: | Online Resource |