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사범대학
과학교육과
Journal papers
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COSINE-100 and DAMA/LIBRA-phase2 in WIMP effective models
Title
COSINE-100 and DAMA/LIBRA-phase2 in WIMP effective models
Authors
Adhikari G.
;
Adhikari P.
;
De Souza E.B.
;
Carlin N.
;
Choi S.
;
Djamal M.
;
Ezeribe A.C.
;
Ha C.
;
Hahn I.S.
;
Jeon E.J.
;
Jo J.H.
;
Joo H.W.
;
Kang W.G.
;
Kang W.
;
Kauer M.
;
Kim G.S.
;
Kim H.
;
Kim H.J.
;
Kim K.W.
;
Kim N.Y.
;
Kim S.K.
;
Kim Y.D.
;
Kim Y.H.
;
Ko Y.J.
;
Kudryavtsev V.A.
;
Lee H.S.
;
Lee J.
;
Lee J.Y.
;
Lee M.H.
;
Leonard D.S.
;
Lynch W.A.
;
Maruyama R.H.
;
Mouton F.
;
Olsen S.L.
;
Park B.J.
;
Park H.K.
;
Park H.S.
;
Park K.S.
;
Pitta R.L.C.
;
Prihtiadi H.
;
Ra S.J.
;
Rott C.
;
Shin K.A.
;
Scarff A.
;
Spooner N.J.C.
;
Thompson W.G.
;
Yang L.
;
Yu G.H.
;
Kang S.
;
Scopel S.
;
Tomar G.
;
Yoon J.-H.
;
The COSINE-100 collaboration
;
The Sogang Phenomenology Group
Ewha Authors
한인식
SCOPUS Author ID
한인식
Issue Date
2019
Journal Title
Journal of Cosmology and Astroparticle Physics
ISSN
1475-7516
Citation
Journal of Cosmology and Astroparticle Physics vol. 2019, no. 6
Keywords
Dark matter experiments
;
Dark matter theory
Publisher
Institute of Physics Publishing
Indexed
SCIE; SCOPUS
Document Type
Article
Abstract
Assuming a standard Maxwellian for the WIMP velocity distribution, we obtain the bounds from null WIMP search results of 59.5 days of COSINE-100 data on the DAMA/LIBRA-phase2 modulation effect within the context of the non-relativistic effective theory of WIMP-nucleus scattering. Here, we systematically assume that one of the effective operators allowed by Galilean invariance dominates in the effective Hamiltonian of a spin-1/2 dark matter (DM) particle. We find that, although DAMA/LIBRA and COSINE-100 use the same sodium-iodide target, the comparison of the two results still depends on the particle-physics model. This is mainly due to two reasons: i) the WIMP signal spectral shape; ii) the expected modulation fractions, when the upper bound on the time-averaged rate in COSINE-100 is converted into a constraint on the annual modulation component in DAMA/LIBRA . We find that the latter effect is the dominant one. For several effective operators the expected modulation fractions are larger than in the standard spin-independent or spin-dependent interaction cases. As a consequence, compatibility between the modulation effect observed in DAMA/LIBRA and the null result from COSINE-100 is still possible for several non-relativistic operators. At low WIMP masses such relatively high values of the modulation fractions arise because COSINE-100 is mainly sensitive to WIMP-sodium scattering events, due to the higher threshold compared to DAMA/LIBRA . A next COSINE analysis is expected to have a full sensitivity for the 5 σ region of DAMA/LIBRA. © 2019 IOP Publishing Ltd and Sissa Medialab.
DOI
10.1088/1475-7516/2019/06/048
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