{"_buckets": {"deposit": "c5c195eb-c618-4201-a4b0-276cdc995eed"}, "_deposit": {"id": "2365", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "2365"}, "status": "published"}, "_oai": {"id": "oai:niigata-u.repo.nii.ac.jp:00002365"}, "item_5_biblio_info_6": {"attribute_name": "\u66f8\u8a8c\u60c5\u5831", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2001-07", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "3", "bibliographicPageStart": "034505", "bibliographicVolumeNumber": "64", "bibliographic_titles": [{"bibliographic_title": "Physical Review D"}, {"bibliographic_title": "Physical Review D", "bibliographic_titleLang": "en"}]}]}, "item_5_description_4": {"attribute_name": "\u6284\u9332", "attribute_value_mlt": [{"subitem_description": "We present a calculation of the B and D meson decay constants in lattice QCD with two (N f =2) flavors of light dynamical quarks, using an O(a)-improved Wilson action for both light and heavy quarks and a renormalization-group improved gauge action. Simulations are made at three values of lattice spacing a=0.22,0.16,0.11 fm and four values of sea quark mass in the range m PS /m V \u22480.8-0.6. Our provisional estimate for the continuum values of the decay constants are f Bd =208(10)(29) MeV, f Bs =250(10)(35)( +8 -0 ) MeV, f Dd =225(14)(40) MeV, f Ds =267(13)(48)( +10 -0 ) MeV for N f =2 where the statistical and systematic errors are separately listed, and the third error for f Bs and f Ds shows the uncertainty of the determination of the strange quark mass. We also carry out a set of quenched simulations using the same action to make a direct examination of sea quark effects. Taking the ratio of results for N f =2 and N f =0, we obtain f N f =2 Bd /f N f =0 Bd =1.11(6),f N f =2 Bs /f N f =0 Bs =1.14(5),f N f =2 Dd /f N f =0 Dd =1.03(6),f N f =2 Ds /f N f =0 Ds =1.07(5). They show a 10\u201315 % increase in the N f =2 results over those of N f =0 for the B meson decay constants, while evidence for such a trend is statistically less clear for the D meson decay constants.", "subitem_description_type": "Abstract"}]}, "item_5_publisher_7": {"attribute_name": "\u51fa\u7248\u8005", "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.64.034505", "subitem_relation_type_select": "DOI"}}]}, "item_5_rights_15": {"attribute_name": "\u6a29\u5229", "attribute_value_mlt": [{"subitem_rights": "(C) 2001 American Physical Society"}]}, "item_5_select_19": {"attribute_name": "\u8457\u8005\u7248\u30d5\u30e9\u30b0", "attribute_value_mlt": [{"subitem_select_item": "publisher"}]}, "item_5_source_id_11": {"attribute_name": "\u66f8\u8a8c\u30ec\u30b3\u30fc\u30c9ID", "attribute_value_mlt": 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[{"creatorName": "Nagai, K.I."}], "nameIdentifiers": [{"nameIdentifier": "18585", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Okawa, M."}], "nameIdentifiers": [{"nameIdentifier": "18586", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Shanahan, H.P."}], "nameIdentifiers": [{"nameIdentifier": "18587", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Ukawa, A."}], "nameIdentifiers": [{"nameIdentifier": "18588", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Yoshie, T."}], "nameIdentifiers": [{"nameIdentifier": "18589", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "CP-PACS, Collaboration"}], "nameIdentifiers": [{"nameIdentifier": "18590", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "\u30d5\u30a1\u30a4\u30eb\u60c5\u5831", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": 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