{"created":"2021-03-01T06:06:01.831180+00:00","id":2327,"links":{},"metadata":{"_buckets":{"deposit":"b6c0164d-b1d3-4b15-965c-080abfffe4b2"},"_deposit":{"id":"2327","owners":[],"pid":{"revision_id":0,"type":"depid","value":"2327"},"status":"published"},"_oai":{"id":"oai:niigata-u.repo.nii.ac.jp:00002327","sets":["154:501:502","453:454"]},"item_5_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2005-02","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"034001","bibliographicPageEnd":"11","bibliographicPageStart":"1","bibliographicVolumeNumber":"71","bibliographic_titles":[{"bibliographic_title":"Physical Review D"},{"bibliographic_title":"Physical Review D","bibliographic_titleLang":"en"}]}]},"item_5_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The pentaquark (5Q) baryon is studied in anisotropic quenched lattice QCD with renormalized anisotropy a_s/a_t = 4 for a high-precision mass measurement. The standard Wilson action at β= 5.75 and the O (a) improved Wilson quark action with k = 0.1210(0.0010)0.1240 are employed on a 12^3 × 96 lattice. Contribution of excited states is suppressed by using a smeared source. We investigate both the positive- and negative-parity 5Q baryons with I = 0 and spin J = 1/2 using a non-NK-type interpolating field. After chiral extrapolation, the lowest positive-parity state is found to have a mass, m_<5Q> = 2.25 GeV, which is much heavier than the experimentally observed Θ^+ (1540). The lowest negative-parity 5Q state appears at m_<5Q> = 1.75 GeV, which is near the s-wave NK threshold. To distinguish spatially-localized 5Q resonances from NK-scattering states, we propose a new general method imposing a ‘‘Hybrid Boundary Condition (HBC),’’ where the NK threshold is artificially raised without affecting compact five-quark states. The study using the HBC method shows that the negative-parity state observed on the lattice is not a compact 5Q state but an s-wave NK-scattering state.","subitem_description_type":"Abstract"}]},"item_5_publisher_7":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"American Physical Society"}]},"item_5_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"info:doi/10.1103/PhysRevD.71.034001","subitem_relation_type_select":"DOI"}}]},"item_5_rights_15":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"Copyright: The American Physical Society"}]},"item_5_select_19":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_5_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA00773624","subitem_source_identifier_type":"NCID"}]},"item_5_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"15507998","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Ishii, N."}],"nameIdentifiers":[{"nameIdentifier":"14302","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Doi, T."}],"nameIdentifiers":[{"nameIdentifier":"14303","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Iida, H."}],"nameIdentifiers":[{"nameIdentifier":"14304","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Oka, M."}],"nameIdentifiers":[{"nameIdentifier":"14305","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Okiharu, F."}],"nameIdentifiers":[{"nameIdentifier":"14306","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Suganuma, H."}],"nameIdentifiers":[{"nameIdentifier":"14307","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":"2019-07-29"}],"displaytype":"detail","filename":"034001.pdf","filesize":[{"value":"191.9 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"034001.pdf","url":"https://niigata-u.repo.nii.ac.jp/record/2327/files/034001.pdf"},"version_id":"174c3f52-fcb7-43fa-96fc-82075126ece7"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Okiharu, Fumiko","subitem_subject_scheme":"Other"},{"subitem_subject":"興治, 文子","subitem_subject_scheme":"Other"}]},"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":"Pentaquark baryon in anisotropic lattice QCD","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Pentaquark baryon in anisotropic lattice QCD"},{"subitem_title":"Pentaquark baryon in anisotropic lattice QCD","subitem_title_language":"en"}]},"item_type_id":"5","owner":"1","path":["454","502"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-01-28"},"publish_date":"2014-01-28","publish_status":"0","recid":"2327","relation_version_is_last":true,"title":["Pentaquark baryon in anisotropic lattice QCD"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-15T03:35:17.333618+00:00"}