Improved Dark Photon Sensitivity from a Superconducting-Radio-Frequency-Cavity Experiment

Saarik Kalia; Zhen Liu; Bianca Giaccone; Oleksandr Melnychuk; Roman Pilipenko; Asher Berlin; Anson Hook; Sergey Belomestnykh; Crispin Contreras-Martinez; Daniil Frolov; Timergali Khabiboulline; Yuriy Pischalnikov; Sam Posen; Oleg Pronitchev; Vyacheslav Yakovlev; Anna Grassellino; Roni Harnik; Alexander Romanenko

doi:10.1103/p7r3-c15d

Improved Dark Photon Sensitivity from a Superconducting-Radio-Frequency-Cavity Experiment

Saarik Kalia
, Zhen Liu
, Bianca Giaccone
, Oleksandr Melnychuk
, Roman Pilipenko
, Asher Berlin
, Anson Hook
, Sergey Belomestnykh
, Crispin Contreras-Martinez
, Daniil Frolov
, Timergali Khabiboulline
, Yuriy Pischalnikov
, Sam Posen
, Oleg Pronitchev
, Vyacheslav Yakovlev
, Anna Grassellino
, Roni Harnik
, Alexander Romanenko

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

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.

Original language	English (US)
Article number	111802
Journal	Physical review letters
Volume	136
Issue number	11
DOIs	https://doi.org/10.1103/p7r3-c15d
State	Published - Mar 20 2026

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Publisher Copyright:
© 2026 authors. Published by the American Physical Society.

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Kalia, S., Liu, Z., Giaccone, B., Melnychuk, O., Pilipenko, R., Berlin, A., Hook, A., Belomestnykh, S., Contreras-Martinez, C., Frolov, D., Khabiboulline, T., Pischalnikov, Y., Posen, S., Pronitchev, O., Yakovlev, V., Grassellino, A., Harnik, R., & Romanenko, A. (2026). Improved Dark Photon Sensitivity from a Superconducting-Radio-Frequency-Cavity Experiment. Physical review letters, 136(11), Article 111802. https://doi.org/10.1103/p7r3-c15d

Kalia, S, Liu, Z, Giaccone, B, Melnychuk, O, Pilipenko, R, Berlin, A, Hook, A, Belomestnykh, S, Contreras-Martinez, C, Frolov, D, Khabiboulline, T, Pischalnikov, Y, Posen, S, Pronitchev, O, Yakovlev, V, Grassellino, A, Harnik, R & Romanenko, A 2026, 'Improved Dark Photon Sensitivity from a Superconducting-Radio-Frequency-Cavity Experiment', Physical review letters, vol. 136, no. 11, 111802. https://doi.org/10.1103/p7r3-c15d

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title = "Improved Dark Photon Sensitivity from a Superconducting-Radio-Frequency-Cavity Experiment",

abstract = "We report the refined dark-photon exclusion bound from Dark SRF{\textquoteright}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 mγ<2.9×10-48 g.",

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AU - Kalia, Saarik

AU - Liu, Zhen

AU - Giaccone, Bianca

AU - Melnychuk, Oleksandr

AU - Pilipenko, Roman

AU - Berlin, Asher

AU - Hook, Anson

AU - Belomestnykh, Sergey

AU - Contreras-Martinez, Crispin

AU - Frolov, Daniil

AU - Khabiboulline, Timergali

AU - Pischalnikov, Yuriy

AU - Posen, Sam

AU - Pronitchev, Oleg

AU - Yakovlev, Vyacheslav

AU - Grassellino, Anna

AU - Harnik, Roni

AU - Romanenko, Alexander

PY - 2026/3/20

Y1 - 2026/3/20

N2 - 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 mγ<2.9×10-48 g.

AB - 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 mγ<2.9×10-48 g.

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JO - Physical review letters

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ER -

Improved Dark Photon Sensitivity from a Superconducting-Radio-Frequency-Cavity Experiment

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