Long-lived Sterile Neutrino Searches at Future Muon Colliders
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866908307672793088 |
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| author | Bi, Qi Guo, Jinhui Liu, Jia Luo, Yan Wang, Xiao-Ping |
| author_facet | Bi, Qi Guo, Jinhui Liu, Jia Luo, Yan Wang, Xiao-Ping |
| contents | We explore the potential of studying sterile neutrinos at a future high-energy muon collider, where these particles can generate small active neutrino masses via the seesaw mechanism and exhibit long-lived particle signatures. A Dirac sterile neutrino model with ${\rm U(1)}_{L_μ-L_τ}$ symmetry is introduced, where the heavy right-handed neutrino ($N_R$) produces tiny active neutrino masses, and the light left-handed neutrino ($N_L$) naturally behaves as a long-lived particle. The ${\rm U(1)}_{L_μ-L_τ}$ gauge symmetry also enhances sterile neutrino pair production at a future high-energy muon collider. Using the displaced vertex method, the muon collider can search for heavy sterile neutrino, especially for $m_L> m_W$. We find that a muon collider with $\sqrt{s} = 3~ (10)$ TeV and luminosity $L=1~(10)$ ab$^{-1}$ can probe $N_L$ masses of $m_L \in [100,~1500~(5000)]$ GeV and mixing angles $θ_{νL} \in [10^{-13},~10^{-6}]$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_17243 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Long-lived Sterile Neutrino Searches at Future Muon Colliders Bi, Qi Guo, Jinhui Liu, Jia Luo, Yan Wang, Xiao-Ping High Energy Physics - Phenomenology We explore the potential of studying sterile neutrinos at a future high-energy muon collider, where these particles can generate small active neutrino masses via the seesaw mechanism and exhibit long-lived particle signatures. A Dirac sterile neutrino model with ${\rm U(1)}_{L_μ-L_τ}$ symmetry is introduced, where the heavy right-handed neutrino ($N_R$) produces tiny active neutrino masses, and the light left-handed neutrino ($N_L$) naturally behaves as a long-lived particle. The ${\rm U(1)}_{L_μ-L_τ}$ gauge symmetry also enhances sterile neutrino pair production at a future high-energy muon collider. Using the displaced vertex method, the muon collider can search for heavy sterile neutrino, especially for $m_L> m_W$. We find that a muon collider with $\sqrt{s} = 3~ (10)$ TeV and luminosity $L=1~(10)$ ab$^{-1}$ can probe $N_L$ masses of $m_L \in [100,~1500~(5000)]$ GeV and mixing angles $θ_{νL} \in [10^{-13},~10^{-6}]$. |
| title | Long-lived Sterile Neutrino Searches at Future Muon Colliders |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2409.17243 |