{"_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": []}, "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\u0027drj, 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=√\u003cη2\u003e) 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\u0027 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_31": {"attribute_name": "フォーマット：mimeタイプ", "attribute_value_mlt": [{"subitem_description": "application/pdf", "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_select_64": {"attribute_name": "著者版フラグ", "attribute_value_mlt": [{"subitem_select_item": "publisher"}]}, "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_39": {"attribute_name": "NII 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_10_text_66": {"attribute_name": "sortkey", "attribute_value_mlt": [{"subitem_text_value": "01"}]}, "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", "download_preview_message": "", "file_order": 0, "filename": "Science38-01.pdf", "filesize": [{"value": "493.5 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_note", "mimetype": "application/pdf", "size": 493500.0, "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"], "permalink_uri": "http://hdl.handle.net/10091/10680", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2010-10-06"}, "publish_date": "2010-10-06", "publish_status": "0", "recid": "12014", "relation": {}, "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_shared_id": -1}