학술논문
Direct dark matter searches with the full data set of XMASS-I
Document Type
Working Paper
Author
XMASS Collaboration; Abe, K.; Hiraide, K.; Kato, N.; Moriyama, S.; Nakahata, M.; Sato, K.; Sekiya, H.; Suzuki, T.; Suzuki, Y.; Takeda, A.; Yang, B. S.; Kim, N. Y.; Kim, Y. D.; Kim, Y. H.; Itow, Y.; Martens, K.; Mason, A.; Yamashita, M.; Miuchi, K.; Takeuchi, Y.; Lee, K. B.; Lee, M. K.; Fukuda, Y.; Ogawa, H.; Ichimura, K.; Kishimoto, Y.; Nishijima, K.; Fushimi, K.; Xu, B. D.; Kobayashi, K.; Nakamura, S.
Source
Phys. Rev. D 108, 083022 (2023)
Subject
Language
Abstract
Various WIMP dark matter searches using the full data set of XMASS-I, a single-phase liquid xenon detector, are reported in this paper. Stable XMASS-I data taking accumulated a total live time of 1590.9 days between November 20, 2013 and February 1, 2019 with an analysis threshold of ${\rm 1.0\,keV_{ee}}$. In the latter half of data taking a lower analysis threshold of ${\rm 0.5\,keV_{ee}}$ was also available through a new low threshold trigger. Searching for a WIMP signal in the detector's 97~kg fiducial volume yielded a limit on the WIMP-nucleon scattering cross section of ${\rm 1.4\times 10^{-44}\, cm^{2}}$ for a ${\rm 60\,GeV/c^{2}}$ WIMP at the 90$\%$ confidence level. We also searched for WIMP induced annual modulation signatures in the detector's whole target volume, containing 832~kg of liquid xenon. For nuclear recoils of a ${\rm 8\,GeV/c^{2}}$ WIMP this analysis yielded a 90\% CL cross section limit of ${\rm 2.3\times 10^{-42}\, cm^{2}}$. At a WIMP mass of ${\rm 0.5\, GeV/c^{2}}$ the Migdal effect and Bremsstrahlung signatures were evaluated and lead to 90\% CL cross section limits of ${\rm 1.4\times 10^{-35}\, cm^{2}}$ and ${\rm 1.1\times 10^{-33}\, cm^{2}}$ respectively.