{"created":"2021-03-01T06:32:37.136293+00:00","id":24652,"links":{},"metadata":{"_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":["336:695:696"]},"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","filename":"PhysRevD_95_023006.pdf","filesize":[{"value":"901.4 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","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"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2017-08-02"},"publish_date":"2017-08-02","publish_status":"0","recid":"24652","relation_version_is_last":true,"title":["Relic abundance in a secluded dark matter scenario with a massive mediator"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-01-16T04:15:09.146909+00:00"}