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Title: First search for a dark matter annual modulation signal with NaI(Tl) in the Southern Hemisphere by DM-Ice17

In this study, the first search for a dark matter annual modulation signal with NaI(Tl) target material in the Southern Hemisphere conducted with the DM-Ice17 experiment is presented. DM-Ice17 consists of 17 kg of NaI(Tl) scintillating crystal under 2200 m.w.e. overburden of Antarctic glacial ice. The analysis presented here utilizes a 60.8 kg yr exposure. While unable to exclude the signal reported by DAMA/LIBRA, the DM-Ice17 data are consistent with no modulation in the energy range of 4-20 keV, providing the strongest limits on WIMP candidates from a direct detection experiment located in the Southern Hemisphere. Additionally, the successful deployment and stable operation of 17 kg of NaI(Tl) crystal over 3.5 years establishes the South Pole ice as a viable location for future underground, low-background experiments.
Authors:
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Publication Date:
Report Number(s):
FERMILAB-PUB-16-043-AE; arXiv:1602.05939
Journal ID: ISSN 2470-0010; PRVDAQ; 1422186
Grant/Contract Number:
AC02-07CH11359; FC52-08NA28752
Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 95; Journal Issue: 3; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Contributing Orgs:
DM-Ice Collaboration
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DM-Ice; dark matter; sodium iodide; WIMP; direct detection; annual modulation; South Pole
OSTI Identifier:
1253581
Alternate Identifier(s):
OSTI ID: 1345278

Barbosa de Souza, E., Cherwinka, J., Cole, A., Ezeribe, A. C., Grant, D., Halzen, F., Heeger, K. M., Hsu, L., Hubbard, A. J. F., Jo, J. H., Karle, A., Kauer, M., Kudryavtsev, V. A., Lim, K. E., Macdonald, C., Maruyama, R. H., Mouton, F., Paling, S. M., Pettus, W., Pierpoint, Z. P., Reilly, B. N., Robinson, M., Rogers, F. R., Sandstrom, P., Scarff, A., Spooner, N. J. C., Telfer, S., and Yang, L.. First search for a dark matter annual modulation signal with NaI(Tl) in the Southern Hemisphere by DM-Ice17. United States: N. p., Web. doi:10.1103/PhysRevD.95.032006.
Barbosa de Souza, E., Cherwinka, J., Cole, A., Ezeribe, A. C., Grant, D., Halzen, F., Heeger, K. M., Hsu, L., Hubbard, A. J. F., Jo, J. H., Karle, A., Kauer, M., Kudryavtsev, V. A., Lim, K. E., Macdonald, C., Maruyama, R. H., Mouton, F., Paling, S. M., Pettus, W., Pierpoint, Z. P., Reilly, B. N., Robinson, M., Rogers, F. R., Sandstrom, P., Scarff, A., Spooner, N. J. C., Telfer, S., & Yang, L.. First search for a dark matter annual modulation signal with NaI(Tl) in the Southern Hemisphere by DM-Ice17. United States. doi:10.1103/PhysRevD.95.032006.
Barbosa de Souza, E., Cherwinka, J., Cole, A., Ezeribe, A. C., Grant, D., Halzen, F., Heeger, K. M., Hsu, L., Hubbard, A. J. F., Jo, J. H., Karle, A., Kauer, M., Kudryavtsev, V. A., Lim, K. E., Macdonald, C., Maruyama, R. H., Mouton, F., Paling, S. M., Pettus, W., Pierpoint, Z. P., Reilly, B. N., Robinson, M., Rogers, F. R., Sandstrom, P., Scarff, A., Spooner, N. J. C., Telfer, S., and Yang, L.. 2017. "First search for a dark matter annual modulation signal with NaI(Tl) in the Southern Hemisphere by DM-Ice17". United States. doi:10.1103/PhysRevD.95.032006. https://www.osti.gov/servlets/purl/1253581.
@article{osti_1253581,
title = {First search for a dark matter annual modulation signal with NaI(Tl) in the Southern Hemisphere by DM-Ice17},
author = {Barbosa de Souza, E. and Cherwinka, J. and Cole, A. and Ezeribe, A. C. and Grant, D. and Halzen, F. and Heeger, K. M. and Hsu, L. and Hubbard, A. J. F. and Jo, J. H. and Karle, A. and Kauer, M. and Kudryavtsev, V. A. and Lim, K. E. and Macdonald, C. and Maruyama, R. H. and Mouton, F. and Paling, S. M. and Pettus, W. and Pierpoint, Z. P. and Reilly, B. N. and Robinson, M. and Rogers, F. R. and Sandstrom, P. and Scarff, A. and Spooner, N. J. C. and Telfer, S. and Yang, L.},
abstractNote = {In this study, the first search for a dark matter annual modulation signal with NaI(Tl) target material in the Southern Hemisphere conducted with the DM-Ice17 experiment is presented. DM-Ice17 consists of 17 kg of NaI(Tl) scintillating crystal under 2200 m.w.e. overburden of Antarctic glacial ice. The analysis presented here utilizes a 60.8 kg yr exposure. While unable to exclude the signal reported by DAMA/LIBRA, the DM-Ice17 data are consistent with no modulation in the energy range of 4-20 keV, providing the strongest limits on WIMP candidates from a direct detection experiment located in the Southern Hemisphere. Additionally, the successful deployment and stable operation of 17 kg of NaI(Tl) crystal over 3.5 years establishes the South Pole ice as a viable location for future underground, low-background experiments.},
doi = {10.1103/PhysRevD.95.032006},
journal = {Physical Review D},
number = 3,
volume = 95,
place = {United States},
year = {2017},
month = {2}
}