| Full text | |
| Author(s): Show less - |
Kim, K. W.
[1]
;
Adhikari, G.
[2]
;
de Souza, E. Barbosa
[3, 4]
;
Carlin, N.
[5]
;
Choi, J. J.
[6]
;
Choi, S.
[6]
;
Djamal, M.
[7]
;
Ezeribe, A. C.
[8]
;
Franca, L. E.
[5]
;
Ha, C.
[9]
;
Hahn, I. S.
[10, 11, 12]
;
Jeon, E. J.
[1]
;
Jo, J. H.
[3, 4]
;
Kang, W. G.
[1]
;
Kauer, M.
[13, 14]
;
Kim, H.
[1]
;
Kim, H. J.
[15]
;
Kim, S. H.
[1]
;
Kim, S. K.
[6]
;
Kim, W. K.
[1, 11]
;
Kim, Y. D.
[16, 1, 11]
;
Kim, Y. H.
[17, 1, 11]
;
Ko, Y. J.
[1]
;
Lee, E. K.
[1]
;
Lee, H.
[1, 11]
;
Lee, H. S.
[1, 11]
;
Lee, H. Y.
[1]
;
Lee, I. S.
[1]
;
Lee, J.
[1]
;
Lee, J. Y.
[6]
;
Lee, M. H.
[1, 11]
;
Lee, S. H.
[1, 11]
;
Lee, S. M.
[6]
;
Leonard, D. S.
[1]
;
Manzato, B. B.
[5]
;
Maruyama, R. H.
[3, 4]
;
Neal, R. J.
[8]
;
Olsen, S. L.
[1]
;
Park, B. J.
[1, 11]
;
Park, H. K.
[18]
;
Park, H. S.
[17]
;
Park, K. S.
[1]
;
Pitta, R. L. C.
[5]
;
Prihtiadi, H.
[1]
;
Ra, S. J.
[1]
;
Rott, C.
[19]
;
Shin, K. A.
[1]
;
Scarff, A.
[8]
;
Spooner, N. J. C.
[8]
;
Thompson, W. G.
[3, 4]
;
Yang, L.
[2]
;
Yu, G. H.
[19]
;
Collaboration, COSINE-100
Total Authors: 53
|
| Affiliation: Show less - | [1] Inst Basic Sci IBS, Ctr Underground Phys, Daejeon 34126 - South Korea
[2] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 - USA
[3] Yale Univ, Dept Phys, New Haven, CT 06520 - USA
[4] Yale Univ, Wright Lab, New Haven, CT 06520 - USA
[5] Univ Sao Paulo, Phys Inst, BR-05508090 Sao Paulo - Brazil
[6] Seoul Natl Univ, Dept Phys & Astron, Seoul 08826 - South Korea
[7] Bandung Inst Technol, Dept Phys, Bandung 40132 - Indonesia
[8] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire - England
[9] Chung Ang Univ, Dept Phys, Seoul 06973 - South Korea
[10] Ewha Womans Univ, Dept Sci Educ, Seoul 03760 - South Korea
[11] Univ Sci & Technol UST, IBS Sch, Daejeon 34113 - South Korea
[12] Inst Basic Sci IBS, Ctr Exot Nucl Studies, Daejeon 34126 - South Korea
[13] Univ Wisconsin, Dept Phys, Madison, WI 53706 - USA
[14] Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 - USA
[15] Kyungpook Natl Univ, Dept Phys, Daegu 41566 - South Korea
[16] Sejong Univ, Dept Phys & Astron, Seoul 05006 - South Korea
[17] Korea Res Inst Stand & Sci, Daejeon 34113 - South Korea
[18] Korea Univ, Dept Accelerator Sci, Sejong 30019 - South Korea
[19] Sungkyunkwan Univ, Dept Phys, Seoul 16419 - South Korea
Total Affiliations: 19
|
| Document type: | Journal article |
| Source: | EUROPEAN PHYSICAL JOURNAL C; v. 81, n. 8 AUG 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
We report the identification of metastable isomeric states of Ac-228 at 6.28 keV, 6.67 keV and 20.19 keV, with lifetimes of an order of 100 ns. These states are produced by the beta-decay of Ra-228, a component of the Th-232 decay chain, with beta Q-values of 39.52 keV, 39.13 keV and 25.61 keV, respectively. Due to the low Q-value of Ra-228 as well as the relative abundance of Th-232 and their progeny in low background experiments, these observations potentially impact the low-energy background modeling of dark matter search experiments. (AU) | |
| FAPESP's process: | 17/02952-0 - Search for dark matter: WIMPs and dark photons |
| Grantee: | Nelson Carlin Filho |
| Support Opportunities: | Regular Research Grants |