Improved Dark Photon Sensitivity from the Dark SRF 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 four orders of magnitude larger). This result represents the world-leading constraint on non-dark-matter dark photons over a wide range of masses below $6\mu \mathrm{eV}$ and translates to the best laboratory-based limit on the photon mass $m_{\gamma }<2.9\times 10^{-48}\mathrm{g}$.

7 pages, 1 figure, 1 table. Published version

References in corpus (15)

• Vector Dark Matter from Inflationary Fluctuations
• New ALPS Results on Hidden-Sector Lightweights
• Dark Light, Dark Matter and the Misalignment Mechanism
• Kinetic Mixing of the Photon with Hidden U(1)s in String Phenomenology
• Dark photon limits: a handbook
• A Radio for Hidden-Photon Dark Matter Detection
• Helioscope Bounds on Hidden Sector Photons
• First results of the CERN Resonant WISP Search (CROWS)
• The Cosmological Evolution of Light Dark Photon Dark Matter
• A Cavity Experiment to Search for Hidden Sector Photons
• Photon Mass Bound Destroyed by Vortices
• A Parametrically Enhanced Hidden Photon Search
• Cryogenic resonant microwave cavity searches for hidden sector photons
• Constraining hidden photons via atomic force microscope measurements and the Plimpton-Lawton experiment
• Shaping Dark Photon Spectral Distortions