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Physics potential of a long-baseline neutrino oscillation experiment using a J-PARC neutrino beam and Hyper-Kamiokande

Abstract:

Hyper-Kamiokande will be a next-generation underground water Cherenkov detector with a total (fiducial) mass of 0.99 (0.56) million metric tons, approximately 20 (25) times larger than that of Super-Kamiokande. One of the main goals of Hyper-Kamiokande is the study of CP asymmetry in the lepton sector using accelerator neutrino and anti-neutrino beams. In this paper, the physics potential of a long-baseline neutrino experiment using the Hyper- Kamiokande detector and a neutrino beam from the J-PARC proton synchrotron is presented. The analysis uses the framework and systematic uncertainties derived from the ongoing T2K experiment. With a total exposure of 7.5MW ×10<sup>7</sup>s integrated proton beam power (corresponding to 1.56 × 10<sup>22</sup>protons on target with a 30 GeV proton beam) to a 2.5° off-axis neutrino beam, it is expected that the leptonic CP phase δ<inf>CP</inf>can be determined to better than 19 degrees for all possible values of δ<inf>CP</inf>, and CP violation can be established with a statistical significance of more than 3 σ (5 σ) for 76% (58%) of the δ<inf>CP</inf>parameter space. Using both ν<inf>e</inf>appearance and νμ disappearance data, the expected 1 σ uncertainty of sin<sup>2</sup>Θ<inf>23</inf>is 0.015(0.006) for sin<sup>2</sup>Θ<inf>23</inf>= 0.5(0.45).

Año de publicación:

2015

Keywords:

    Fuente:

    scopusscopus
    googlegoogle

    Tipo de documento:

    Article

    Estado:

    Acceso abierto

    Áreas de conocimiento:

    • Física de partículas

    Áreas temáticas de Dewey:

    • Física moderna
    Procesado con IAProcesado con IA

    Objetivos de Desarrollo Sostenible:

    • ODS 9: Industria, innovación e infraestructura
    • ODS 17: Alianzas para lograr los objetivos
    • ODS 4: Educación de calidad
    Procesado con IAProcesado con IA

    Contribuidores:

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    Ikeda M.Ikeda M.
    Catanesi M.G.Catanesi M.G.
    Irvine T.Irvine T.
    Kajita T.Kajita T.
    Asfandiyarov R.Asfandiyarov R.
    Inoue K.Inoue K.
    Collazuol G.Collazuol G.
    Choi J.H.Choi J.H.
    Kaboth A.Kaboth A.
    Joo K.K.Joo K.K.
    Huang K.Huang K.
    Haegel L.Haegel L.
    Gonin M.Gonin M.
    Askins M.Askins M.
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    Katori T.Katori T.
    Bergevin M.Bergevin M.
    Barbi M.Barbi M.
    Jung C.K.Jung C.K.
    Ariga A.Ariga A.
    Emery S.Emery S.
    Karadhzov Y.Karadhzov Y.
    M. G. CatanesiM. G. Catanesi
    Beltrame P.Beltrame P.
    Fukuda Y.Fukuda Y.
    I. AnghelI. Anghel
    J. Y. KimJ. Y. Kim
    K. ChoiK. Choi
    Kameda J.Kameda J.
    Insler J.Insler J.
    Hartz M.Hartz M.
    G. DaviesG. Davies
    Berry T.Berry T.
    Blondel A.Blondel A.
    Hisakazu MinakataHisakazu Minakata
    Anghel I.Anghel I.
    Himmel A.Himmel A.
    Kobayashi T.Kobayashi T.
    De Rosa G.De Rosa G.
    Iijima T.Iijima T.
    Ishino H.Ishino H.
    H. I. JangH. I. Jang
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    Khabibullin M.Khabibullin M.
    Densham C.J.Densham C.J.
    Boyd S.B.Boyd S.B.
    Di Luise S.Di Luise S.
    Haga Y.Haga Y.
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    Intonti R.A.Intonti R.A.
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    Di Lodovico F.Di Lodovico F.
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    Dewhurst D.Dewhurst D.
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    Hartfiel B.Hartfiel B.