2026-06-08T13:38:57Zhttps://docta.ucm.es/rest/oai/request
oai:docta.ucm.es:20.500.14352/1008982025-09-01T14:52:38Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense author Frugiuele, Claudia author Pérez-Ríos, Jesús author Peset Martín, Clara María 2024-02-09T12:09:59Z 2024-02-09T12:09:59Z 2019 Frugiuele, Claudia, et al. «Current and Future Perspectives of Positronium and Muonium Spectroscopy as Dark Sectors Probe». Physical Review D, vol. 100, n.o 1, julio de 2019, p. 015010. https://doi.org/10.1103/PhysRevD.100.015010. 2470-0010 10.1103/PhysRevD.100.015010 https://hdl.handle.net/20.500.14352/100898 2470-0029 https://doi.org/10.1103/PhysRevD.100.015010 Positronium and muonium are purely leptonic atoms and hence free of an internal substructure. This qualifies them as potentially well suited systems to probe the existence of physics beyond the Standard Model. We hence carry out a comprehensive study of the sensitivity of current positronium and muonium precision spectroscopy to several new physics scenarios. By taking properly into account existing experimental and astrophysical probes, we define clear experimental targets to probe new physics via precise spectroscopy. For positronium we find that, in order for the spectroscopy bounds to reach a sensitivity comparable to the electron gyromagnetic factor, an improvement of roughly five orders of magnitude from state-of-the-art precision is required, which would be a challenge based on current technology. More promising is instead the potential reach of muonium spectroscopy: in the next few years experiments like Mu-MASS at PSI will probe new regions of the parameter space testing the existence of medium/short range (MeV and above) spin-dependent and spin-independent dark forces between electrons and muons. eng Attribution 4.0 International Current and future perspectives of positronium and muonium spectroscopy as dark sectors probe journal article 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URL https://docta.ucm.es/bitstreams/41f6c634-c3bb-4bf4-8024-b780a3d86326/download File MD5 764d35fe10cd84427dd95ef65d87a0a1 377316 application/pdf PhysRevD.100.015010.pdf