A direct dark matter search in XMASS-I
| Title: | A direct dark matter search in XMASS-I |
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| Authors: | XMASS Collaboration, Abe, K., Hiraide, K., Ichimura, K., Kishimoto, Y., Kobayashi, K., Kobayashi, M., Moriyama, S., Nakahata, M., Norita, T., Ogawa, H., Sato, K., Sekiya, H., Takachio, O., Takeda, A., Tasaka, S., Yamashita, M., Yang, B. S., Kim, N. Y., Kim, Y. D., Itow, Y., Kanzawa, K., Kegasa, R., Masuda, K., Takiya, H., Fushimi, K., Kanzaki, G., Martens, K., Suzuki, Y., Xu, B. D., Fujita, R., Hosokawa, K., Miuchi, K., Oka, N., Takeuchi, Y., Kim, Y. H., Lee, K. B., Lee, M. K., Fukuda, Y., Miyasaka, M., Nishijima, K., Nakamura, S. |
| Source: | Physics Letters B 789 (2019) 45-53 |
| Publication Year: | 2018 |
| Collection: | Astrophysics Physics (Other) |
| Subject Terms: | Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Instrumentation and Detectors |
| More Details: | A search for dark matter using an underground single-phase liquid xenon detector was conducted at the Kamioka Observatory in Japan, particularly for Weakly Interacting Massive Particles (WIMPs). We have used 705.9 live days of data in a fiducial volume containing 97 kg of liquid xenon at the center of the detector. The event rate in the fiducial volume after the data reduction was ${\rm (4.2 \pm 0.2) \times 10^{-3} \, day^{-1}kg^{-1} keV_{ee}^{-1}}$ at ${\rm 5 \, keV_{ee}}$, with a signal efficiency of ${\rm 20\%}$. All the remaining events are consistent with our background evaluation, mostly of the "mis-reconstructed events" originated from $^{210}$Pb in the copper plates lining the detector's inner surface. The obtained upper limit on a spin-independent WIMP-nucleon cross section was ${\rm 2.2 \times 10^{-44} \, cm^{2}}$ for a WIMP mass of ${\rm 60 \, GeV/c^{2}}$ at the $90\%$ confidence level, which was the most stringent limit among results from single-phase liquid xenon detectors. Comment: 16 pages, 8 figures |
| Document Type: | Working Paper |
| DOI: | 10.1016/j.physletb.2018.10.070 |
| Access URL: | http://arxiv.org/abs/1804.02180 |
| Accession Number: | edsarx.1804.02180 |
| Database: | arXiv |
| DOI: | 10.1016/j.physletb.2018.10.070 |
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