DOE OSTI · 3017478
Improved Dark Photon Sensitivity from a Superconducting-Radio-Frequency-Cavity Experiment
Abstract
We report the refined dark-photon exclusion bound from Dark SRF’s pathfinder run. Our new result is driven by improved theoretical modeling of frequency instability in high-quality resonant experiments. Our analysis leads to a constraint that is an order of magnitude stronger than previously reported (corresponding to a signal-to-noise ratio that is 4 orders of magnitude larger). This result represents the world-leading constraint on non-dark-matter dark photons over a wide range of masses below 6 μeV and translates to the best laboratory-based limit on the photon mass 𝑚 𝛾 < 2.9 × 10 −48 g.
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Kalia, Saarik [Univ. of Minnesota, Minneapolis, MN (United States)] (ORCID:0000000273626501), Liu, Zhen [Univ. of Minnesota, Minneapolis, MN (United States)] (ORCID:0000000231431976), Giaccone, Bianca [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)] (ORCID:0000000272758465), Melnychuk, Oleksandr [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)] (ORCID:0000000220898685), Pilipenko, Roman [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)], Berlin, Asher [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)] (ORCID:0000000211561482), Hook, Anson [Univ. of Maryland, College Park, MD (United States)] (ORCID:0009000573191439), Belomestnykh, Sergey [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)] (ORCID:0000000178228169), Contreras-Martinez, Crispin [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)], Frolov, Daniil [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); IBM Research, Yorktown Heights, NY (United States)], Khabiboulline, Timergali [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)] (ORCID:0009000594178452), Pischalnikov, Yuriy [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)] (ORCID:0000000193539029), Posen, Sam [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)] (ORCID:000000026499306X), Pronitchev, Oleg [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)] (ORCID:0009000911601278), Yakovlev, Vyacheslav [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)] (ORCID:0000000339699421), Grassellino, Anna [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)] (ORCID:0000000239858296), Harnik, Roni [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)] (ORCID:0000000172937175), Romanenko, Alexander [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)] (ORCID:0000000313780870). 2026-03-18. Improved Dark Photon Sensitivity from a Superconducting-Radio-Frequency-Cavity Experiment. https://doi.org/10.1103/p7r3-c15d
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