Looking forward to inelastic DM with electromagnetic form factors at FASER and beam dump experiments
| Autor: | Jodłowski, Krzysztof |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Phys.Rev.D 108 (2023) 11, 115025 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.108.115025 |
| Popis: | 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, $\gamma c\tau \sim O(1)\,$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 $\chi_1 \to \chi_0 e^+ e^-$, resulting in a naturally long-lived $\chi_1$. We find that the decays of $\chi_1$ 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. Comment: 19 pages, 7 figures. Fig. 2 added, minor changes in text, results unchanged. Matches version accepted by PRD |
| Databáze: | arXiv |
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