تقرير
Accurate Measurement of the Electron Antineutrino Yield of U-235 Fissions from the STEREO Experiment with 119 Days of Reactor-On Data
| العنوان: | Accurate Measurement of the Electron Antineutrino Yield of U-235 Fissions from the STEREO Experiment with 119 Days of Reactor-On Data |
|---|---|
| المؤلفون: | STEREO Collaboration, Almazán, H., Bernard, L., Blanchet, A., Bonhomme, A., Buck, C., Sanchez, P. del Amo, Atmani, I. El, Haser, J., Labit, L., Lamblin, J., Letourneau, A., Lhuillier, D., Licciardi, M., Lindner, M., Materna, T., Minotti, A., Onillon, A., Pessard, H., Réal, J. -S., Roca, C., Rogly, R., Salagnac, T., Savu, V., Schoppmann, S., Sergeyeva, V., Soldner, T., Stutz, A., Vialat, M. |
| المصدر: | Phys. Rev. Lett. 125, 201801 (2020) |
| سنة النشر: | 2020 |
| المجموعة: | High Energy Physics - Experiment Nuclear Experiment Physics (Other) |
| مصطلحات موضوعية: | High Energy Physics - Experiment, Nuclear Experiment, Physics - Instrumentation and Detectors |
| الوصف: | We report a measurement of the antineutrino rate from the fission of U-235 with the STEREO detector using 119 days of reactor turned on. In our analysis, we perform several detailed corrections and achieve the most precise single measurement at reactors with highly enriched U-235 fuel. We measure an IBD cross section per fission of $\sigma_f$ = (6.34 $\pm$ 0.06 [stat] $\pm$ 0.15 [sys] $\pm$ 0.15 [model]) $\times$ 10${}^{-43}$ cm${}^{2}$/fission and observe a rate deficit of (5.2 $\pm$ 0.8 [stat] $\pm$ 2.3 [sys] $\pm$ 2.3 [model])% compared to the model, consistent with the deficit of the world average. Testing U-235 as the sole source of the deficit, we find a tension between the results of lowly and highly enriched U-235 fuel of 2.1 standard deviations. Comment: 7 pages, 1 figure |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.125.201801 |
| URL الوصول: | http://arxiv.org/abs/2004.04075 |
| رقم الأكسشن: | edsarx.2004.04075 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.125.201801 |
|---|