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Remarks on bosonic super-WIMP search experiments

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Title
Remarks on bosonic super-WIMP search experiments
Author(s)
Young Ju Ko; Park, HyangKyu
Publication Date
2021-10-26
Journal
Physical Review d, v.104, no.8
Publisher
AMER PHYSICAL SOC
Abstract
© 2021 authors.Bosonic super-weakly interacting massive particles (WIMPs), including pseudoscalar and vector particles, are dark-matter candidates. To date, many underground experiments searches for super-WIMPs have been performed in the mass range of a few keV/c2 to 1 MeV/c2. All these searches utilize the absorption process of a super-WIMP by a target atom in the detector, which is similar to the photoelectric effect. We consider another process - namely, a Compton-like process. As an example, we compare the cross section of a germanium atom for the absorption process with that of a Compton-like process. Our findings indicate that the cross section for the Compton-like process becomes dominant relative to that for the absorption process for mass above approximately 150 keV/c2 for both pseudoscalar and vector super-WIMPs. In particular, the cross section for the Compton-like process for a vector super-WIMP becomes increasingly greater than that for the absorption process by 1 to 2 orders of magnitude in the 400 keV/c2 to 1 MeV/c2 mass range, respectively. By including the Compton-like process, which has not been used in any other super-WIMP search experiments, the experimental upper limits can be improved.
URI
https://pr.ibs.re.kr/handle/8788114/10861
DOI
10.1103/PhysRevD.104.083030
ISSN
2470-0010
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > 1. Journal Papers (저널논문)
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