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| Format: | Preprint |
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2023
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| Online Access: | https://arxiv.org/abs/2305.16781 |
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| _version_ | 1866916359996178432 |
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| author | Jodłowski, Krzysztof |
| author_facet | Jodłowski, Krzysztof |
| contents | Inelastic Dark Matter (iDM) is an interesting thermal DM scenario that can pose challenges for conventional detection methods. However, recent studies demonstrated that iDM coupled to a photon by electric or magnetic dipole moments can be effectively constrained by intensity frontier experiments using the displaced single-photon decay signature. In this work, we show that by utilizing additional signatures for such models, the sensitivity reach can be increased towards the short-lived regime, $γcτ\sim O(1)\,$m, which can occur in the region of the parameter space relevant to successful thermal freeze-out. These processes are secondary iDM production taking place by upscattering in front of the decay vessel and electron scattering. Additionally, we consider dimension-6 scenarios of photon-coupled iDM - the anapole moment and the charge radius operator - where the leading decay of the heavier iDM state is $χ_1 \to χ_0 e^+ e^-$, resulting in a naturally long-lived $χ_1$. We find that the decays of $χ_1$ at FASER2, MATHUSLA, and SHiP will constrain these models more effectively than the scattering signature considered for the elastic coupling case, while secondary production yields similar constraints as the scattering. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2305_16781 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Looking forward to inelastic DM with electromagnetic form factors at FASER and beam dump experiments Jodłowski, Krzysztof High Energy Physics - Phenomenology Inelastic Dark Matter (iDM) is an interesting thermal DM scenario that can pose challenges for conventional detection methods. However, recent studies demonstrated that iDM coupled to a photon by electric or magnetic dipole moments can be effectively constrained by intensity frontier experiments using the displaced single-photon decay signature. In this work, we show that by utilizing additional signatures for such models, the sensitivity reach can be increased towards the short-lived regime, $γcτ\sim O(1)\,$m, which can occur in the region of the parameter space relevant to successful thermal freeze-out. These processes are secondary iDM production taking place by upscattering in front of the decay vessel and electron scattering. Additionally, we consider dimension-6 scenarios of photon-coupled iDM - the anapole moment and the charge radius operator - where the leading decay of the heavier iDM state is $χ_1 \to χ_0 e^+ e^-$, resulting in a naturally long-lived $χ_1$. We find that the decays of $χ_1$ at FASER2, MATHUSLA, and SHiP will constrain these models more effectively than the scattering signature considered for the elastic coupling case, while secondary production yields similar constraints as the scattering. |
| title | Looking forward to inelastic DM with electromagnetic form factors at FASER and beam dump experiments |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2305.16781 |