تقرير
Dark Matter Search Results from the Complete Exposure of the PICO-60 C$_3$F$_8$ Bubble Chamber
| العنوان: | Dark Matter Search Results from the Complete Exposure of the PICO-60 C$_3$F$_8$ Bubble Chamber |
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| المؤلفون: | Amole, C., Ardid, M., Arnquist, I. J., Asner, D. M., Baxter, D., Behnke, E., Bressler, M., Broerman, B., Cao, G., Chen, C. J., Chowdhury, U., Clark, K., Collar, J. I., Cooper, P. S., Coutu, C. B., Cowles, C., Crisler, M., Crowder, G., Cruz-Venegas, N. A., Dahl, C. E., Das, M., Fallows, S., Farine, J., Felis, I., Filgas, R., Girard, F., Giroux, G., Hall, J., Hardy, C., Harris, O., Hillier, T., Hoppe, E. W., Jackson, C. M., Jin, M., Klopfenstein, L., Krauss, C. B., Laurin, M., Lawson, I., Leblanc, A., Levine, I., Licciardi, C., Lippincott, W. H., Loer, B., Mamedov, F., Mitra, P., Moore, C., Nania, T., Neilson, R., Noble, A. J., Oedekerk, P., Ortega, A., Piro, M. -C., Plante, A., Podviyanuk, R., Priya, S., Robinson, A. E., Sahoo, S., Scallon, O., Seth, S., Sonnenschein, A., Starinski, N., Štekl, I., Sullivan, T., Tardif, F., Vázquez-Jáuregui, E., Walkowski, N., Weima, E., Wichoski, U., Wierman, K., Yan, Y., Zacek, V., Zhang, J. |
| المصدر: | Phys. Rev. D 100, 022001 (2019) |
| سنة النشر: | 2019 |
| المجموعة: | Astrophysics High Energy Physics - Experiment Physics (Other) |
| مصطلحات موضوعية: | Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment, Physics - Instrumentation and Detectors |
| الوصف: | Final results are reported from operation of the PICO-60 C$_3$F$_8$ dark matter detector, a bubble chamber filled with 52 kg of C$_3$F$_8$ located in the SNOLAB underground laboratory. The chamber was operated at thermodynamic thresholds as low as 1.2 keV without loss of stability. A new blind 1404-kg-day exposure at 2.45 keV threshold was acquired with approximately the same expected total background rate as the previous 1167-kg-day exposure at 3.3 keV. This increased exposure is enabled in part by a new optical tracking analysis to better identify events near detector walls, permitting a larger fiducial volume. These results set the most stringent direct-detection constraint to date on the WIMP-proton spin-dependent cross section at 2.5 $\times$ 10$^{-41}$ cm$^2$ for a 25 GeV WIMP, and improve on previous PICO results for 3-5 GeV WIMPs by an order of magnitude. Comment: 9 pages, 8 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.100.022001 |
| URL الوصول: | http://arxiv.org/abs/1902.04031 |
| رقم الأكسشن: | edsarx.1902.04031 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.100.022001 |
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