تقرير
New Limit on Dark Photon Kinetic Mixing in the 0.2-1.2 $\boldsymbol{\mu}$eV Mass Range From the Dark E-Field Radio Experiment
| العنوان: | New Limit on Dark Photon Kinetic Mixing in the 0.2-1.2 $\boldsymbol{\mu}$eV Mass Range From the Dark E-Field Radio Experiment |
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| المؤلفون: | Levine, Joseph, Godfrey, Benjamin, Tyson, J. Anthony, Tripathi, S. Mani, Polin, Daniel, Aminaei, Amin, Kolner, Brian H., Stucky, Paul |
| سنة النشر: | 2024 |
| المجموعة: | High Energy Physics - Experiment |
| مصطلحات موضوعية: | High Energy Physics - Experiment |
| الوصف: | We report new limits on the kinetic mixing strength of the dark photon spanning the mass range 0.21 -- 1.24 $\mu$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 $\epsilon$ several orders of magnitude lower than previous limits. We find a 95% exclusion limit on $\epsilon$ over this mass range between $6\times 10^{-15}$ and $6\times 10^{-13}$, tracking the complex resonant mode structure in the shielded room. Comment: 15 pages, 12 figures, submitted to PRD |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2405.20444 |
| رقم الأكسشن: | edsarx.2405.20444 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |