تقرير
Dark Matter Search Results from the PICO-60 C$_3$F$_8$ Bubble Chamber
| العنوان: | Dark Matter Search Results from 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., Bhattacharjee, P., Borsodi, H., Bou-Cabo, M., Campion, P., Cao, G., Chen, C. J., Chowdhury, U., Clark, K., Collar, J. I., Cooper, P. S., Crisler, M., Crowder, G., Dahl, C. E., Das, M., Fallows, S., Farine, J., Felis, I., Filgas, R., Girard, F., Giroux, G., Hall, J., Harris, O., Hoppe, E. W., Jin, M., Krauss, C. B., Laurin, M., Lawson, I., Leblanc, A., Levine, I., Lippincott, W. H., Mamedov, F., Maurya, D., Mitra, P., Nania, T., Neilson, R., Noble, A. J., Olson, S., Ortega, A., Plante, A., Podviyanuk, R., Priya, S., Robinson, A. E., Roeder, A., Rucinski, R., Scallon, O., Seth, S., Sonnenschein, A., Starinski, N., Štekl, I., Tardif, F., Vázquez-Jáuregui, E., Wells, J., Wichoski, U., Yan, Y., Zacek, V., Zhang, J. |
| المصدر: | Phys. Rev. Lett. 118, 251301 (2017) |
| سنة النشر: | 2017 |
| المجموعة: | Astrophysics High Energy Physics - Experiment Physics (Other) |
| مصطلحات موضوعية: | Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment, Physics - Instrumentation and Detectors |
| الوصف: | New results are reported from the operation of the PICO-60 dark matter detector, a bubble chamber filled with 52 kg of C$_3$F$_8$ located in the SNOLAB underground laboratory. As in previous PICO bubble chambers, PICO-60 C$_3$F$_8$ exhibits excellent electron recoil and alpha decay rejection, and the observed multiple-scattering neutron rate indicates a single-scatter neutron background of less than 1 event per month. A blind analysis of an efficiency-corrected 1167-kg-day exposure at a 3.3-keV thermodynamic threshold reveals no single-scattering nuclear recoil candidates, consistent with the predicted background. These results set the most stringent direct-detection constraint to date on the WIMP-proton spin-dependent cross section at 3.4 $\times$ 10$^{-41}$ cm$^2$ for a 30-GeV$\thinspace$c$^{-2}$ WIMP, more than one order of magnitude improvement from previous PICO results. Comment: 6 pages, 6 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.118.251301 |
| URL الوصول: | http://arxiv.org/abs/1702.07666 |
| رقم الأكسشن: | edsarx.1702.07666 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.118.251301 |
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