Discovery Prospects for a Leptophilic Gauge Boson $Z_\ell$ at CEPC and ILC
Fuente:
arXiv
Guardado en:
| Autor principal: | |
|---|---|
| Formato: | Preprint |
| Publicado: |
2025
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866917153005895680 |
|---|---|
| author | Kara, Seyit Okan |
| author_facet | Kara, Seyit Okan |
| contents | We investigate the discovery prospects of a leptophilic gauge boson Z_l at future $e^+e^-$ colliders, focusing on a comparative study of the Circular Electron-Positron Collider (CEPC) and the International Linear Collider (ILC). This state can arise from an additional U(1)'_l gauge symmetry under which quarks are neutral and all leptons have a universal charge, motivated by neutrino oscillations and physics beyond the Standard Model. As a clean benchmark we study $e^+e^- \to μ^+μ^-$ including realistic initial state radiation (ISR) and beamstrahlung. We find that CEPC at sqrt(s)=240 GeV can probe couplings down to $g_l \sim 10^{-3}$ for $Z_l$ masses up to about 220 GeV, while the ILC extends the sensitivity to heavier states in the multi-hundred GeV range through its higher sqrt(s) stages. These results highlight the complementarity of circular and linear colliders in testing purely leptophilic interactions. Published in Chinese Physics C 50 (2026) 033104. DOI: 10.1088/1674-1137/ae1de4 |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_05884 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Discovery Prospects for a Leptophilic Gauge Boson $Z_\ell$ at CEPC and ILC Kara, Seyit Okan High Energy Physics - Phenomenology High Energy Physics - Experiment We investigate the discovery prospects of a leptophilic gauge boson Z_l at future $e^+e^-$ colliders, focusing on a comparative study of the Circular Electron-Positron Collider (CEPC) and the International Linear Collider (ILC). This state can arise from an additional U(1)'_l gauge symmetry under which quarks are neutral and all leptons have a universal charge, motivated by neutrino oscillations and physics beyond the Standard Model. As a clean benchmark we study $e^+e^- \to μ^+μ^-$ including realistic initial state radiation (ISR) and beamstrahlung. We find that CEPC at sqrt(s)=240 GeV can probe couplings down to $g_l \sim 10^{-3}$ for $Z_l$ masses up to about 220 GeV, while the ILC extends the sensitivity to heavier states in the multi-hundred GeV range through its higher sqrt(s) stages. These results highlight the complementarity of circular and linear colliders in testing purely leptophilic interactions. Published in Chinese Physics C 50 (2026) 033104. DOI: 10.1088/1674-1137/ae1de4 |
| title | Discovery Prospects for a Leptophilic Gauge Boson $Z_\ell$ at CEPC and ILC |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2511.05884 |