{"_buckets": {"deposit": "528a49c0-fcb2-4e3c-b7f2-cad040d17a8e"}, "_deposit": {"id": "24652", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "24652"}, "status": "published"}, "_oai": {"id": "oai:nagoya.repo.nii.ac.jp:00024652", "sets": ["696"]}, "author_link": ["73046", "73047", "73048"], "item_10_biblio_info_6": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2017-01", "bibliographicIssueDateType": "Issued"}, "bibliographicPageEnd": "023006", "bibliographicPageStart": "023006", "bibliographicVolumeNumber": "95", "bibliographic_titles": [{"bibliographic_title": "Physical Review D", "bibliographic_titleLang": "en"}]}]}, "item_10_description_4": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "The relic abundance of the dark matter (DM) particle d is studied in a secluded DM scenario, in which the d number decreasing process dominantly occurs not through the pair annihilation of d into the standard model particles, but via the dd→mm scattering process with a subsequently decaying mediator particle m. It is pointed out that the cosmologically observed relic abundance of DM can be accomplished even with a massive mediator having a mass mm non-negligibly heavy compared with the DM particle mass md. In the degenerated d−m case (md=mm), the DM relic abundance is realized by adjusting the dd→mm scattering amplitude large enough and by choosing an appropriate mediator particle lifetime. The DM evolution in the early universe exhibits characteristic “terrace” behavior, or two-step number density decreasing behavior, having a “fake” freeze-out at the first step. Based on these observations, a novel possibility of the DM model buildings is introduced in which the mediator particle m is unified with the DM particle d in an approximate dark symmetry multiplet. A pionic DM model is proposed to illustrate this idea in a renormalizable field theory framework.", "subitem_description_language": "en", "subitem_description_type": "Abstract"}]}, "item_10_identifier_60": {"attribute_name": "URI", "attribute_value_mlt": [{"subitem_identifier_type": "DOI", "subitem_identifier_uri": "https://doi.org/10.1103/PhysRevD.95.023006"}, {"subitem_identifier_type": "HDL", "subitem_identifier_uri": "http://hdl.handle.net/2237/26871"}]}, "item_10_publisher_32": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "American Physical Society", "subitem_publisher_language": "en"}]}, "item_10_relation_11": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type": "isVersionOf", "subitem_relation_type_id": {"subitem_relation_type_id_text": "https://doi.org/10.1103/PhysRevD.95.023006", "subitem_relation_type_select": "DOI"}}]}, "item_10_rights_12": {"attribute_name": "権利", "attribute_value_mlt": [{"subitem_rights": "© 2017 American Physical Society", "subitem_rights_language": "en"}]}, "item_10_select_15": {"attribute_name": "著者版フラグ", "attribute_value_mlt": [{"subitem_select_item": "publisher"}]}, "item_10_source_id_7": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "2470-0010", "subitem_source_identifier_type": "PISSN"}]}, "item_1615787544753": {"attribute_name": "出版タイプ", "attribute_value_mlt": [{"subitem_version_resource": "http://purl.org/coar/version/c_970fb48d4fbd8a85", "subitem_version_type": "VoR"}]}, "item_access_right": {"attribute_name": "アクセス権", "attribute_value_mlt": [{"subitem_access_right": "open access", "subitem_access_right_uri": "http://purl.org/coar/access_right/c_abf2"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Okawa, Shohei", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "73046", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Tanabashi, Masaharu", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "73047", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Yamanaka, Masato", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "73048", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "ファイル情報", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2018-02-22"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "PhysRevD_95_023006.pdf", "filesize": [{"value": "901.4 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_note", "mimetype": "application/pdf", "size": 901400.0, "url": {"label": "PhysRevD_95_023006.pdf", "objectType": "fulltext", "url": "https://nagoya.repo.nii.ac.jp/record/24652/files/PhysRevD_95_023006.pdf"}, "version_id": "7d6a4028-3f31-4430-ab60-b875d7ec1242"}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_resource_type": {"attribute_name": "資源タイプ", "attribute_value_mlt": [{"resourcetype": "journal article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "Relic abundance in a secluded dark matter scenario with a massive mediator", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Relic abundance in a secluded dark matter scenario with a massive mediator", "subitem_title_language": "en"}]}, "item_type_id": "10", "owner": "1", "path": ["696"], "permalink_uri": "http://hdl.handle.net/2237/26871", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2017-08-02"}, "publish_date": "2017-08-02", "publish_status": "0", "recid": "24652", "relation": {}, "relation_version_is_last": true, "title": ["Relic abundance in a secluded dark matter scenario with a massive mediator"], "weko_shared_id": -1}