{"created":"2021-03-01T06:14:55.209774+00:00","id":12014,"links":{},"metadata":{"_buckets":{"deposit":"279b0518-1192-4839-9c7a-41c6ed79e115"},"_deposit":{"id":"12014","owners":[],"pid":{"revision_id":0,"type":"depid","value":"12014"},"status":"published"},"_oai":{"id":"oai:soar-ir.repo.nii.ac.jp:00012014","sets":["1169:1171:1172:1181"]},"author_link":["36848","36849","36850"],"item_10_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2004-03-26","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"12","bibliographicPageStart":"1","bibliographicVolumeNumber":"38","bibliographic_titles":[{"bibliographic_title":"信州大学理学部紀要"}]}]},"item_10_description_20":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Interesting data on dNch/dη in Au-Au collisions (η=-In tan(θ/2)) with the centrality cuts have been reported by BRAHMS Collaboration. Using the total multiplicity Nch=∫(dNch/dη)dη, we find that there are scaling phenomena among (Nch){ 1dNch/dη=dn/dη with different centrality cuts at √SNN=130 GeV and 200 GeV, respectively. To explain these scaling behaviors of dnl'drj, we consider the stochastic approach named the Ornstein-Uhlenbeck process with two sources. The following Fokker-Planck equation is adopted for the present analyses, ∂P(x,t)/∂t = γ[∂/∂x x+1/2 σ2/γ ∂2/∂x2]P(x,t) where x means the rapidity (y) or pseudo-rapidity (η). t, γ and σ2 and the evolution parameter, the frictional coefficient and the variance, respectively. Introducing a variable of zr=η/ηrms (ηrms=√<η2>) we explain the dn/dzr distributions in the present approach. Moreover, to explain the rapidity (y) distributions from η distributions at 200 GeV, we have derived the formula as dn/dy=J{ 1dn/dη' where J{ 1=√M(1+sinh2y)/√1+Msinh2y with M=1+(m/pt)2. Their data of pion and all hadrons are fairly well explained by the O-U process. To compare our approach with another one, a phenomenological formula by Eskola et al. is also used in calculations of dn/dη.","subitem_description_type":"Abstract"}]},"item_10_description_30":{"attribute_name":"資源タイプ（コンテンツの種類）","attribute_value_mlt":[{"subitem_description":"Article","subitem_description_type":"Other"}]},"item_10_description_5":{"attribute_name":"引用","attribute_value_mlt":[{"subitem_description":"信州大学理学部紀要 38: 1-12(2004)","subitem_description_type":"Other"}]},"item_10_publisher_4":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"信州大学理学部"}]},"item_10_source_id_35":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0583-063X","subitem_source_identifier_type":"PISSN"}]},"item_10_source_id_40":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA00697923","subitem_source_identifier_type":"NCID"}]},"item_1627890569677":{"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_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"IDE,  M","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"36848","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"BIYAJIMA,  M","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"36849","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"MIZOGUCHI,  T","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"36850","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":"2015-09-28"}],"displaytype":"detail","filename":"Science38-01.pdf","filesize":[{"value":"493.5 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"Science38-01.pdf","url":"https://soar-ir.repo.nii.ac.jp/record/12014/files/Science38-01.pdf"},"version_id":"6c6ee03f-fbad-4d5c-be2a-149bb0d3827a"}]},"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":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Analyses of dNch/dη and dNch/dy distributions of BRAHMS Collaboration by means of the Ornstein-Uhlenbeck process","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Analyses of dNch/dη and dNch/dy distributions of BRAHMS Collaboration by means of the Ornstein-Uhlenbeck process","subitem_title_language":"en"}]},"item_type_id":"10","owner":"1","path":["1181"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2010-10-06"},"publish_date":"2010-10-06","publish_status":"0","recid":"12014","relation_version_is_last":true,"title":["Analyses of dNch/dη and dNch/dy distributions of BRAHMS Collaboration by means of the Ornstein-Uhlenbeck process"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-03-08T01:54:58.829870+00:00"}