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Sterile neutrino dark matter with dipole interaction

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Title: Sterile neutrino dark matter with dipole interaction
Authors: Cho, Wonsub Browse this author
Choi, Ki-Young Browse this author
Seto, Osamu Browse this author →KAKEN DB
Issue Date: 13-Jan-2022
Publisher: American Physical Society (APS)
Journal Title: Physical Review D
Volume: 105
Issue: 1
Start Page: 15016-1
End Page: 15016-12
Publisher DOI: 10.1103/PhysRevD.105.015016
Abstract: We consider the possibility of the lightest sterile neutrino dark matter which has dipole interaction with heavier sterile neutrinos. The lifetime can be long enough to be a dark matter candidate without violating other constraints and the correct amount of relic abundance can be produced in the early Universe. We find that a sterile neutrino with the mass of around MeV and the dimension-five nonrenormalizable dipole interaction suppressed by ?5 greater than or similar to 1015 GeV can be a good candidate of dark matter, while heavier sterile neutrinos with masses of the order of GeV can explain the active neutrino oscillations.
Type: article
Appears in Collections:高等教育推進機構 (Institute for the Advancement of Higher Education) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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