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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2410.08981 |
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| _version_ | 1866912486616203264 |
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| author | Capozzi, Francesco Dutta, Bhaskar Gurung, Gajendra Jang, Wooyoung Shoemaker, Ian M. Thompson, Adrian Yu, Jaehoon |
| author_facet | Capozzi, Francesco Dutta, Bhaskar Gurung, Gajendra Jang, Wooyoung Shoemaker, Ian M. Thompson, Adrian Yu, Jaehoon |
| contents | New gauge bosons coupled to heavy neutral leptons (HNLs) are simple and well-motivated extensions of the Standard Model. In searches for HNLs in proton fixed-target experiments, we find that a large population of gauge bosons ($Z^\prime$) produced by proton bremsstrahlung may decay to HNLs, leading to a significant improvement in existing bounds on the ($m_{HNL}, U_α$), where $U_α$ represent the mixing between HNL and the active neutrinos with flavor $α$. We study this possibility in fixed target experiments with the 8 GeV proton beams, including SBND, MicroBooNE, and ICARUS, as well as DUNE and DarkQuest at 120 GeV. We find the projected sensitivities to additional $Z^\prime$-mediated HNL production can bring the seesaw mechanism of the neutrino masses within a broadened experimental reach. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_08981 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Enhancing the Sensitivity to Seesaw Predictions in Gauged $B-L$ Scenarios Capozzi, Francesco Dutta, Bhaskar Gurung, Gajendra Jang, Wooyoung Shoemaker, Ian M. Thompson, Adrian Yu, Jaehoon High Energy Physics - Phenomenology New gauge bosons coupled to heavy neutral leptons (HNLs) are simple and well-motivated extensions of the Standard Model. In searches for HNLs in proton fixed-target experiments, we find that a large population of gauge bosons ($Z^\prime$) produced by proton bremsstrahlung may decay to HNLs, leading to a significant improvement in existing bounds on the ($m_{HNL}, U_α$), where $U_α$ represent the mixing between HNL and the active neutrinos with flavor $α$. We study this possibility in fixed target experiments with the 8 GeV proton beams, including SBND, MicroBooNE, and ICARUS, as well as DUNE and DarkQuest at 120 GeV. We find the projected sensitivities to additional $Z^\prime$-mediated HNL production can bring the seesaw mechanism of the neutrino masses within a broadened experimental reach. |
| title | Enhancing the Sensitivity to Seesaw Predictions in Gauged $B-L$ Scenarios |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2410.08981 |