Probing light neutralinos from pair-produced sleptons with displaced vertices at the high-luminosity LHC
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909721422725120 |
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| author | Cottin, Giovanna Helo, Juan Carlos Hernández-Pinto, Fabián Neill, Nicolás A. Wang, Zeren Simon |
| author_facet | Cottin, Giovanna Helo, Juan Carlos Hernández-Pinto, Fabián Neill, Nicolás A. Wang, Zeren Simon |
| contents | We study light neutralinos ($\tilde χ_1^0$) with masses ranging from 10 GeV to several hundred GeV within the framework of R-parity-violating (RPV) supersymmetry. These light neutralinos can be long-lived, decaying with a macroscopic displacement (order cm) inside the LHC main detectors. Complementing previous works on the subject, here we focus on their production through the electroweak pair production of left-chiral sleptons ($\tilde e_{L}$), with the signal process $pp\to \tilde e^+_{L} \tilde e^-_{L} \to e^+ \tilde χ_1^0 e^- \tilde χ_1^0$. In contrast to the previous study with a singly produced slepton, where the RPV coupling $λ'_{111}$ induces both the production and decay of the light neutralino, in our scenario the production proceeds through Drell-Yan-like processes that are essentially independent of RPV couplings. Correspondingly, we implement a displaced-vertex search strategy for which our numerical analysis shows that the high-luminosity LHC can probe $λ'_{111}$ values up to three orders of magnitude smaller, and neutralino masses up to about four times larger than those accesible in the previously studied single-slepton production scenario. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_06365 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing light neutralinos from pair-produced sleptons with displaced vertices at the high-luminosity LHC Cottin, Giovanna Helo, Juan Carlos Hernández-Pinto, Fabián Neill, Nicolás A. Wang, Zeren Simon High Energy Physics - Phenomenology We study light neutralinos ($\tilde χ_1^0$) with masses ranging from 10 GeV to several hundred GeV within the framework of R-parity-violating (RPV) supersymmetry. These light neutralinos can be long-lived, decaying with a macroscopic displacement (order cm) inside the LHC main detectors. Complementing previous works on the subject, here we focus on their production through the electroweak pair production of left-chiral sleptons ($\tilde e_{L}$), with the signal process $pp\to \tilde e^+_{L} \tilde e^-_{L} \to e^+ \tilde χ_1^0 e^- \tilde χ_1^0$. In contrast to the previous study with a singly produced slepton, where the RPV coupling $λ'_{111}$ induces both the production and decay of the light neutralino, in our scenario the production proceeds through Drell-Yan-like processes that are essentially independent of RPV couplings. Correspondingly, we implement a displaced-vertex search strategy for which our numerical analysis shows that the high-luminosity LHC can probe $λ'_{111}$ values up to three orders of magnitude smaller, and neutralino masses up to about four times larger than those accesible in the previously studied single-slepton production scenario. |
| title | Probing light neutralinos from pair-produced sleptons with displaced vertices at the high-luminosity LHC |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2505.06365 |