Search for inelastic WIMP-iodine scattering with COSINE-100

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Adhikari, G. ; Carlin, N. ; Cho, J. Y. ; Choi, J. J. ; Choi, S. ; Ezeribe, A. C. ; Franca, L. E. ; Ha, C. ; Hahn, I. S. ; Hollick, S. J. ; Jeon, E. J. ; Joo, H. W. ; Kang, W. G. ; Kauer, M. ; Kim, B. H. ; Kim, H. J. ; Kim, J. ; Kim, K. W. ; Kim, S. H. ; Kim, S. K. ; Kim, S. W. ; Kim, W. K. ; Kim, Y. D. ; Kim, Y. H. ; Ko, Y. J. ; Lee, D. H. ; Lee, E. K. ; Lee, H. ; Lee, H. S. ; Lee, H. Y. ; Lee, I. S. ; Lee, J. ; Lee, J. Y. ; Lee, M. H. ; Lee, S. H. ; Lee, S. M. ; Lee, Y. J. ; Leonard, D. S. ; Luan, N. T. ; Manzato, B. B. ; Maruyama, R. H. ; Neal, R. J. ; Nikkel, J. A. ; Olsen, S. L. ; Park, B. J. ; Park, H. K. ; Park, H. S. ; Park, J. C. ; Park, K. S. ; Park, S. D. ; Pitta, R. L. C. ; Prihtiadi, H. ; Ra, S. J. ; Rott, C. ; Shin, K. A. ; Cavalcante, D. F. F. S. ; Scarff, A. ; Son, M. K. ; Spooner, N. J. C. ; Truc, L. T. ; Yang, L. ; Yu, G. H.

• Document type: Journal article
• Source: PHYSICAL REVIEW D; v. 108, n. 9, p. 8-pg., 2023-11-16.

Abstract

We report the results of a search for inelastic scattering of weakly interacting massive particles (WIMPs) off 127I nuclei using NaI(Tl) crystals with a data exposure of 97.7 kg center dot years from the COSINE-100 experiment. The signature of inelastic WIMP -127I scattering is a nuclear recoil accompanied by a 57.6 keV gamma-ray from the prompt deexcitation, producing a more energetic signal compared to the typical WIMP nuclear recoil signal. We found no evidence for this inelastic scattering signature and set a 90% confidence level upper limit on the WIMP-proton spin-dependent, inelastic scattering cross section of 1.2 x 10-37 cm2 at the WIMP mass 500 GeV/c2. (AU)

• FAPESP's process: 21/06743-1 - Position-sensitive muon detector: dark matter search in the COSINE-200 experiment and application to muon tomography
• Grantee: Nelson Carlin Filho
• Support Opportunities: Regular Research Grants
• FAPESP's process: 22/13293-5 - Dark Photons, Axions and Interaction between WIMPs and Electrons in the COSINE-100 and COSINE-200 Experiments
• Grantee: Luis Eduardo Funo de Moura França
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 22/12002-7 - Detection of dark photons generated by muons' Bremsstrahlung in the COSINE-100 experiment
• Grantee: David Fernando Freitas da Silva Cavalcante
• Support Opportunities: Scholarships in Brazil - Master