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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2405.20444 |
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| _version_ | 1866909213584785408 |
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| author | Levine, Joseph Godfrey, Benjamin Tyson, J. Anthony Tripathi, S. Mani Polin, Daniel Aminaei, Amin Kolner, Brian H. Stucky, Paul |
| author_facet | Levine, Joseph Godfrey, Benjamin Tyson, J. Anthony Tripathi, S. Mani Polin, Daniel Aminaei, Amin Kolner, Brian H. Stucky, Paul |
| contents | We report new limits on the kinetic mixing strength of the dark photon spanning the mass range 0.21 -- 1.24 $μ$eV corresponding to a frequency span of 50 -- 300 MHz. The Dark E-Field Radio experiment is a wide-band search for dark photon dark matter. In this paper we detail changes in calibration and upgrades since our proof-of-concept pilot run. Our detector employs a wide bandwidth E-field antenna moved to multiple positions in a shielded room, a low noise amplifier, wideband ADC, followed by a $2^{24}$-point FFT. An optimal filter searches for signals with Q $\approx10^6$. In nine days of integration, this system is capable of detecting dark photon signals corresponding to $ε$ several orders of magnitude lower than previous limits. We find a 95% exclusion limit on $ε$ over this mass range between $6\times 10^{-15}$ and $6\times 10^{-13}$, tracking the complex resonant mode structure in the shielded room. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_20444 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | New Limit on Dark Photon Kinetic Mixing in the 0.2-1.2 $\boldsymbolμ$eV Mass Range From the Dark E-Field Radio Experiment Levine, Joseph Godfrey, Benjamin Tyson, J. Anthony Tripathi, S. Mani Polin, Daniel Aminaei, Amin Kolner, Brian H. Stucky, Paul High Energy Physics - Experiment We report new limits on the kinetic mixing strength of the dark photon spanning the mass range 0.21 -- 1.24 $μ$eV corresponding to a frequency span of 50 -- 300 MHz. The Dark E-Field Radio experiment is a wide-band search for dark photon dark matter. In this paper we detail changes in calibration and upgrades since our proof-of-concept pilot run. Our detector employs a wide bandwidth E-field antenna moved to multiple positions in a shielded room, a low noise amplifier, wideband ADC, followed by a $2^{24}$-point FFT. An optimal filter searches for signals with Q $\approx10^6$. In nine days of integration, this system is capable of detecting dark photon signals corresponding to $ε$ several orders of magnitude lower than previous limits. We find a 95% exclusion limit on $ε$ over this mass range between $6\times 10^{-15}$ and $6\times 10^{-13}$, tracking the complex resonant mode structure in the shielded room. |
| title | New Limit on Dark Photon Kinetic Mixing in the 0.2-1.2 $\boldsymbolμ$eV Mass Range From the Dark E-Field Radio Experiment |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2405.20444 |