Dark photon constraints from CMB temperature anisotropies

Journal Article · 26 November 2024 · JCAP

DOI: https://doi.org/10.1088/1475-7516/2024/11/049 · OSTI ID:2376219

Aramburo-Garcia, Andres ^[1]; Bondarenko, Kyrylo  ^[2]; Boyarsky, Alexey  ^[1]; Kashko, Pavlo  ^[3]; Pradler, Josef  ^[4]; Sokolenko, Anastasia  ^[5]; Kugel, Roi ^[6]; Schaller, Matthieu  ^[7]; Schaye, Joop  ^[6]

---

1. Leiden U.
2. Nordita
3. Brussels U., IIHE; Antwerp U.
4. Vienna, OAW; Vienna U.
5. Fermilab; Chicago U., KICP
6. Leiden Observ.
7. Leiden U.; Leiden Observ.

The resonant conversion, within the inter-galactic medium, of regular photons into dark photons amplifies the anisotropy observed in the CMB, thereby imposing stringent constraints on the existence of light dark photons. In this study, we investigate the impact of light dark photons, with masses in the range 3 × 10$$^{-15}$$ eV < mA' < 3 × 10$$^{-12}$$ eV on the power spectrum of temperature anisotropies within the cosmic microwave background (CMB) radiation utilizing the state-of-the-art large-volume FLAMINGO cosmological simulations. Our results show that using full Planck data, one can expect the existing constraints on the dark photon mixing parameter in this mass range to improve by an order of magnitude.

• Research Organization: Antwerp U.; Brussels U., IIHE; Chicago U., KICP; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Leiden Observ.; Leiden U.; Nordita; Vienna U.; Vienna, OAW
• Sponsoring Organization: US Department of Energy
• Grant/Contract Number: 89243024CSC000002; AC02-07CH11359
• OSTI ID: 2376219
• Report Number(s): FERMILAB-PUB-24-0219-T; NORDITA 2024-013; UWThPh 2024-9; oai:inspirehep.net:2784468; arXiv:2405.05104
• Journal Information: JCAP, Journal Name: JCAP Vol. 11
• Country of Publication: United States
• Language: English