Abstract We show that if the lepton flavor-violating μ → eγ process is observed in the MEG II experiment, the initial density of primordial black holes (PBHs) can be constrained with scotogenic dark matter. As a benchmark case, if PBH evaporation occurs in the radiation-dominated era, the initial density may be 2 × 10$^{−17}$ ≲ β ≲ 3 × 10$^{−16}$ for the (TeV)-scale dark sector in the scotogenic model, where β is the ratio of the PBH density ρ$_{PBH}$ to the radiation density ρ$_{rad}$ at the time of PBH formation. As another benchmark case, if PBHs evaporate in the PBH-dominated era, the initial density may be 1 × 10$^{−8}$ ≲ β ≲ 3 × 10$^{−7}$ for (GeV)-scale dark matter, with other (TeV)-scale particles in the scotogenic model.
{ "_oai": { "updated": "2022-03-10T09:25:04Z", "id": "oai:repo.scoap3.org:68396", "sets": [ "PTEP" ] }, "authors": [ { "affiliations": [ { "country": "Japan", "value": "Department of Physics, Tokai University, , , 4-1-1 Kitakaname, Hiratsuka, Kanagawa 259-1292, , , Japan" } ], "surname": "Kitabayashi", "email": "teruyuki@tokai-u.jp", "full_name": "Kitabayashi, Teruyuki", "given_names": "Teruyuki" } ], "titles": [ { "source": "OUP", "title": "Primordial black holes and lepton flavor violation with scotogenic dark matter" } ], "dois": [ { "value": "10.1093/ptep/ptac025" } ], "publication_info": [ { "journal_title": "Progress of Theoretical and Experimental Physics", "material": "article", "journal_volume": "2022", "artid": "033B02", "year": 2022, "journal_issue": "3" } ], "$schema": "http://repo.scoap3.org/schemas/hep.json", "acquisition_source": { "date": "2022-03-10T09:25:02.640216", "source": "OUP", "method": "OUP", "submission_number": "ebae4b24a05311ecb06cfacc021f712f" }, "page_nr": [ 19 ], "license": [ { "url": "https://creativecommons.org/licenses/by/4.0/", "license": "CC-BY-4.0" } ], "copyright": [ { "statement": "\u00a9 The Author(s) 2022. Published by Oxford University Press on behalf of the Physical Society of Japan.", "year": "2022" } ], "control_number": "68396", "record_creation_date": "2022-03-10T09:25:02.640263", "_files": [ { "checksum": "md5:6c1206a6924afe2b285a196bf7a3cdec", "filetype": "xml", "bucket": "71660780-3ab9-434c-a999-3d7b5d8b7b3b", "version_id": "0ca8faa4-32d8-4bbf-b6de-ad3652bcd482", "key": "10.1093/ptep/ptac025.xml", "size": 144673 }, { "checksum": "md5:dc8728edc089e6a16abf5c246a1eaf21", "filetype": "pdf", "bucket": "71660780-3ab9-434c-a999-3d7b5d8b7b3b", "version_id": "ea2b198f-8e76-4426-9645-b179d0bdd74b", "key": "10.1093/ptep/ptac025.pdf", "size": 2104814 }, { "checksum": "md5:38f6c5976e02f4e36f893d33aaa93dae", "filetype": "pdf/a", "bucket": "71660780-3ab9-434c-a999-3d7b5d8b7b3b", "version_id": "cec0c075-e57a-449c-9929-a03298309792", "key": "10.1093/ptep/ptac025_a.pdf", "size": 2493281 } ], "collections": [ { "primary": "Progress of Theoretical and Experimental Physics" } ], "arxiv_eprints": [ { "categories": [ "hep-ph" ], "value": "2107.11692" } ], "abstracts": [ { "source": "OUP", "value": "Abstract We show that if the lepton flavor-violating \u03bc \u2192 e\u03b3 process is observed in the MEG II experiment, the initial density of primordial black holes (PBHs) can be constrained with scotogenic dark matter. As a benchmark case, if PBH evaporation occurs in the radiation-dominated era, the initial density may be 2 \u00d7 10$^{\u221217}$ \u2272 \u03b2 \u2272 3 \u00d7 10$^{\u221216}$ for the (TeV)-scale dark sector in the scotogenic model, where \u03b2 is the ratio of the PBH density \u03c1$_{PBH}$ to the radiation density \u03c1$_{rad}$ at the time of PBH formation. As another benchmark case, if PBHs evaporate in the PBH-dominated era, the initial density may be 1 \u00d7 10$^{\u22128}$ \u2272 \u03b2 \u2272 3 \u00d7 10$^{\u22127}$ for (GeV)-scale dark matter, with other (TeV)-scale particles in the scotogenic model." } ], "imprints": [ { "date": "2022-02-04", "publisher": "OUP" } ] }