@article{18cc7e381c954ef990a52f65131d2055,
title = "First search for a dark matter annual modulation signal with NaI(Tl) in the Southern Hemisphere by DM-Ice17",
abstract = "We present the first search for a dark matter annual modulation signal in the Southern Hemisphere conducted with NaI(Tl) detectors, performed by the DM-Ice17 experiment. Nuclear recoils from dark matter interactions are expected to yield an annually modulated signal independent of location within the Earth's hemispheres. DM-Ice17, the first step in the DM-Ice experimental program, consists of 17 kg of NaI(Tl) located at the South Pole under 2200 m.w.e. overburden of Antarctic glacial ice. Taken over 3.6 years for a total exposure of 60.8 kg yr, DM-Ice17 data are consistent with no modulation in the energy range of 4-20 keV, providing the strongest limits on weakly interacting massive particle dark matter from a direct detection experiment located in the Southern Hemisphere. The successful deployment and stable long-term operation of DM-Ice17 establishes the South Pole ice as a viable location for future dark matter searches and in particular for a high-sensitivity NaI(Tl) dark matter experiment to directly test the DAMA/LIBRA claim of the observation of dark matter.",
author = "{(DM-Ice Collaboration)} and {Barbosa De Souza}, E. and J. Cherwinka and A. Cole and Ezeribe, {A. C.} and D. Grant and F. Halzen and Heeger, {K. M.} and L. Hsu and Hubbard, {A. J.F.} and Jo, {J. H.} and A. Karle and M. Kauer and Kudryavtsev, {V. A.} and Lim, {K. E.} and C. MacDonald and Maruyama, {R. H.} and F. Mouton and Paling, {S. M.} and W. Pettus and Pierpoint, {Z. P.} and Reilly, {B. N.} and M. Robinson and Rogers, {F. R.} and P. Sandstrom and A. Scarff and Spooner, {N. J.C.} and S. Telfer and L. Yang",
note = "Funding Information: We thank the Wisconsin IceCube Particle Astrophysics Center (WIPAC) and the IceCube Collaboration for their ongoing experimental support and data management. We thank Chris Toth and Emma Meehan for operational support at Boulby Underground Lab. This work was supported in part by the Alfred P. Sloan Foundation Fellowship, NSF Grants No. PLR-1046816, No. PHY-1151795, and No. PHY-1457995, WIPAC, the Wisconsin Alumni Research Foundation, Yale University, the Natural Sciences and Engineering Research Council of Canada, and Fermilab, operated by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States Department of Energy. W.?P. and A.?H. were supported by the DOE/NNSA Stewardship Science Graduate Fellowship (Grant No. DE-FC52-08NA28752) and NSF Graduate Research Fellowship (Grant No. DGE-1256259) respectively.",
year = "2017",
month = feb,
day = "28",
doi = "10.1103/PhysRevD.95.032006",
language = "English (US)",
volume = "95",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "3",
}