| Literature DB >> 31386435 |
G Adhikari1, P Adhikari1, E Barbosa de Souza2, N Carlin3, S Choi4, M Djamal5, A C Ezeribe6, C Ha7, I S Hahn8, E J Jeon7, J H Jo2, H W Joo4, W G Kang7, W Kang9, M Kauer10, G S Kim11, H Kim7, H J Kim11, K W Kim7, N Y Kim7, S K Kim4, Y D Kim1,7,12, Y H Kim7,12,13, Y J Ko7, V A Kudryavtsev6, H S Lee7,12, J Lee7, J Y Lee11, M H Lee7,12, D S Leonard7, W A Lynch6, R H Maruyama2, F Mouton6, S L Olsen7, B J Park12, H K Park14, H S Park13, K S Park7, R L C Pitta3, H Prihtiadi5, S J Ra7, C Rott9, K A Shin7, A Scarff6, N J C Spooner6, W G Thompson2, L Yang15, G H Yu9.
Abstract
We present new constraints on the dark matter-induced annual modulation signal using 1.7 years of COSINE-100 data with a total exposure of 97.7 kg yr. The COSINE-100 experiment, consisting of 106 kg of NaI(Tl) target material, is designed to carry out a model-independent test of DAMA/LIBRA's claim of WIMP discovery by searching for the same annual modulation signal using the same NaI(Tl) target. The crystal data show a 2.7 cpd/kg/keV background rate on average in the 2-6 keV energy region of interest. Using a χ-squared minimization method we observe best fit values for modulation amplitude and phase of 0.0092±0.0067 cpd/kg/keV and 127.2±45.9 d, respectively.Entities:
Year: 2019 PMID： 31386435 DOI： 10.1103/PhysRevLett.123.031302
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161