Search for low-mass dark matter with CsI(Tl) crystal detectors

H. S. Lee, H. Bhang, J. H. Choi, S. Choi, I. S. Hahn, E. J. Jeon, H. W. Joo, W. G. Kang, B. H. Kim, G. B. Kim, H. J. Kim, J. H. Kim, K. W. Kim, S. C. Kim, S. K. Kim, Y. D. Kim, Y. H. Kim, J. H. Lee, J. K. Lee, S. J. LeeD. S. Leonard, J. Li, J. Li, Y. J. Li, X. R. Li, S. S. Myung, S. L. Olsen, J. W. Park, I. S. Seong, J. H. So, Q. Yue

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

We present a search for low-mass (≤20GeV/c2) weakly interacting massive particles (WIMPs), strong candidates of dark matter particles, using the low-background CsI(Tl) detector array of the Korea Invisible Mass Search experiment. With a total data exposure of 24,524.3 kg days, we search for WIMP interaction signals produced by nuclei recoiling from WIMP-nuclear elastic scattering with visible energies between 2 and 4 keVee (electron-equivalent energy). The observed energy distribution of candidate events is consistent with null signals, and upper limits of the WIMP-proton spin-independent interaction are set with a 90% confidence level. The observed limit covers most of the low-mass region of parameter space favored by the DAMA annual modulation signal assuming the standard halo model.

Original languageEnglish
Article number052006
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume90
Issue number5
DOIs
StatePublished - 23 Sep 2014

Fingerprint

Dive into the research topics of 'Search for low-mass dark matter with CsI(Tl) crystal detectors'. Together they form a unique fingerprint.

Cite this