{"created":"2023-06-20T13:20:40.165641+00:00","id":706,"links":{},"metadata":{"_buckets":{"deposit":"5c000c52-380a-40db-bf87-9191d5dd0719"},"_deposit":{"created_by":1,"id":"706","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"706"},"status":"published"},"_oai":{"id":"oai:ir.soken.ac.jp:00000706","sets":["2:428:16"]},"author_link":["0","0","0"],"item_1_creator_2":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"泉田, 賢一"}],"nameIdentifiers":[{"nameIdentifier":"0","nameIdentifierScheme":"WEKO"}]}]},"item_1_creator_3":{"attribute_name":"フリガナ","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"センダ, ケンイチ"}],"nameIdentifiers":[{"nameIdentifier":"0","nameIdentifierScheme":"WEKO"}]}]},"item_1_date_granted_11":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2008-03-19"}]},"item_1_degree_grantor_5":{"attribute_name":"学位授与機関","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_name":"総合研究大学院大学"}]}]},"item_1_degree_name_6":{"attribute_name":"学位名","attribute_value_mlt":[{"subitem_degreename":"博士（理学）"}]},"item_1_description_12":{"attribute_name":"要旨","attribute_value_mlt":[{"subitem_description":"　The Tokai-to-Kamioka (T2K) neutrino oscillation experiment will start in 2009.<br>In T2K. the center of the neutrino beam from J-PARC at Tokai will go through<br>underground beneath Super-Kamiokande (SK), reach the sea level in the Japan<br>(east) sea near Korean shore. When the beam center is 2.5°(3.0°) downward SK,<br>the neutrino beam with an off-axis angle greater than 1.0°(0.5°) can be observed<br>in Korea. We study the physics potential of the Tokai-to-Kamioka-and-Korea<br>(T2KK) experiment when an additional 100 kt-level Water &#268;erenkov detector is<br>placed in Korea during the T2K experimental period. We find that the matter<br>effect, which arises from the coherent interaction of <i><small>V</small>e</i> (or <i>&oline;<small>V</small>e</i>) off the electrons in<br>the earth matter, is a powerful tool to determine the sign of (<i>m</i><sup>2</sup><sub>3</sub>−<i>m</i><sup>2</sup><sub>1</sub>), and the<br>CP phase, σ<small>MNS</small>, of the lepton flavor mixing matrix. The best combination of the<br>off-axis angles at each detector and the length for the Tokai-to-Korea baseline is<br>found to be 3.0°at SK ( <i>L</i> = 295 km) and 0.5° at <i>L</i> =1000km. If we choose this<br>combination, and if the densities along the baselines are 2.8 g/cm<sup>3</sup> for Tokai-to-<br>Kamioka baseline and 3 g / cm<sup>3</sup> for Tokai-to-Korea baseline with 3% uncertainties,<br>the mass hierarchy pattern can be determined at 3-σ level for sin<sup>2</sup> 2θ<small>RCT</small>＞<sub>～</sub> 0.09,<br>and the CP phase can be constrained with &plusmn; 30°error for sin<sup>2</sup> 2θ<small>RCT</small>0.06, after<br>5 years of running (5 × 10<sup>21</sup> POT). When we combine the result of the future<br>reactor neutrino ercperiments, such as Double-CHOOZ, RENO, DAYA-BAY, the<br>capability of determining the mass hierarchy pattern in T2KK is enhanced, and the<br>hierarchy pattern can be constrained at 3-σ level for sin<sup>2</sup>2θ<small>RCT</small>＞<sub>～</sub> 0.055. Because<br>of the importance of the matter effect, we study the matter profile along the<br>baselines of the T2KK experiment by using the recent geophysical measurements.<br>The average matter density along the Tokai-to-Korea baselines is found to be 2.96,<br>3.01, and 3.03 g/cm<sup>3</sup> for the baseline length of L = 1000, 1100, and 1200 km,<br>respectively, with about 6% uncertainty. Only the real part of the first Fourier<br>mode gives non-negligible but very small contribution to the up <i>v</i>μ→<i>ve</i> oscillation<br>probability. We find that, even if we enhance the error of the average matter<br>density from 3% to 6%, the capability of determining the neutrino mass hierarchy<br>pattern in T2KK does not deteriorate significantly because the measurement error<br>is dominated by statistics.","subitem_description_type":"Other"}]},"item_1_description_18":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_1_description_7":{"attribute_name":"学位記番号","attribute_value_mlt":[{"subitem_description":"総研大甲第1141号","subitem_description_type":"Other"}]},"item_1_select_14":{"attribute_name":"所蔵","attribute_value_mlt":[{"subitem_select_item":"有"}]},"item_1_select_8":{"attribute_name":"研究科","attribute_value_mlt":[{"subitem_select_item":"高エネルギー加速器科学研究科"}]},"item_1_select_9":{"attribute_name":"専攻","attribute_value_mlt":[{"subitem_select_item":"14 素粒子原子核専攻"}]},"item_1_text_10":{"attribute_name":"学位授与年度","attribute_value_mlt":[{"subitem_text_value":"2007"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"SENDA, Kenichi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"0","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":"2016-02-17"}],"displaytype":"simple","filename":"甲1141_要旨.pdf","filesize":[{"value":"203.9 kB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"要旨・審査要旨","url":"https://ir.soken.ac.jp/record/706/files/甲1141_要旨.pdf"},"version_id":"0d09e3ae-94f1-4a06-abd2-def3669479f7"},{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2016-02-17"}],"displaytype":"simple","filename":"甲1141_本文.pdf","filesize":[{"value":"18.0 MB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"本文","url":"https://ir.soken.ac.jp/record/706/files/甲1141_本文.pdf"},"version_id":"cd211338-ec3e-4a0c-b0b4-1f50e84750a8"}]},"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":"thesis","resourceuri":"http://purl.org/coar/resource_type/c_46ec"}]},"item_title":"Physics potential of Tokai-to-Kamioka-and-Korea neutrino oscillation experiment","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Physics potential of Tokai-to-Kamioka-and-Korea neutrino oscillation experiment"},{"subitem_title":"Physics potential of Tokai-to-Kamioka-and-Korea neutrino oscillation experiment","subitem_title_language":"en"}]},"item_type_id":"1","owner":"1","path":["16"],"pubdate":{"attribute_name":"公開日","attribute_value":"2010-02-22"},"publish_date":"2010-02-22","publish_status":"0","recid":"706","relation_version_is_last":true,"title":["Physics potential of Tokai-to-Kamioka-and-Korea neutrino oscillation experiment"],"weko_creator_id":"1","weko_shared_id":1},"updated":"2023-06-20T15:55:20.935925+00:00"}