Diffuse Supernova Neutrino Background Search at Super-Kamiokande

The Super-Kamiokande Collaboration

Diffuse Supernova Neutrino Background Search at Super-Kamiokande

The Super-Kamiokande Collaboration

Kyoto University
Institute for Cosmic Ray Research
University of Tokyo
Research Center for Cosmic Neutrinos
Facultad de Ciencias
Universidad Autónoma de Madrid
Department of Science
York College/The City University of New York
Department of Physics
British Columbia Institute of Technology
TRIUMF
Boston University
Department of Physics and Astronomy
Long Beach VA and University of California

Résultats de recherche: Contribution à un journal › Article de conférence › Revue par des pairs

Résumé

We present the results of a search for the Diffuse Supernova Neutrino Background (DSNB) at Super-Kamiokande (SK) that incorporates 22.5 × 2970 kton.days of data from its fourth data-taking phase. Two analyses, with different energy regimes covering the 9.3−81.3 MeV antineutrino energy range, have been developed based on previous SK searches, with substantially improved background modeling and data reduction techniques. Moreover, a combined analysis of nearly 20 years of SK data (1996-2018) has been performed, with a 90% C.L. sensitivity to the DSNB flux comparable to various DSNB predictions. No significant evidence for a DSNB signal has been observed, and both analyses set world-leading limits on the DSNB flux that can reach about 2.7ν_e.cm⁻².s⁻¹ for a wide range of models.

langue originale	Anglais
Numéro d'article	1139
journal	Proceedings of Science
Volume	395
état	Publié - 18 mars 2022
Evénement	37th International Cosmic Ray Conference, ICRC 2021 - Virtual, Berlin, Allemagne Durée: 12 juil. 2021 → 23 juil. 2021

Contient cette citation

@article{bec508ffae70407ba813aee248dd5ef7,

title = "Diffuse Supernova Neutrino Background Search at Super-Kamiokande",

abstract = "We present the results of a search for the Diffuse Supernova Neutrino Background (DSNB) at Super-Kamiokande (SK) that incorporates 22.5 {\texttimes} 2970 kton.days of data from its fourth data-taking phase. Two analyses, with different energy regimes covering the 9.3−81.3 MeV antineutrino energy range, have been developed based on previous SK searches, with substantially improved background modeling and data reduction techniques. Moreover, a combined analysis of nearly 20 years of SK data (1996-2018) has been performed, with a 90\% C.L. sensitivity to the DSNB flux comparable to various DSNB predictions. No significant evidence for a DSNB signal has been observed, and both analyses set world-leading limits on the DSNB flux that can reach about 2.7νe.cm−2.s−1 for a wide range of models.",

author = "\{The Super-Kamiokande Collaboration\} and \{El Hedri\}, S. and Y. Ashida and A. Giampaolo and K. Abe and C. Bronner and Y. Hayato and K. Hiraide and M. Ikeda and J. Kameda and Y. Kanemura and Y. Kataoka and S. Miki and M. Miura and S. Moriyama and Y. Nagao and M. Nakahata and S. Nakayama and K. Okamoto and G. Pronost and H. Sekiya and M. Shiozawa and Y. Sonoda and Y. Suzuki and A. Takeda and Y. Takemoto and A. Takenaka and H. Tanaka and S. Watanabe and T. Yano and S. Han and T. Kajita and K. Okumura and T. Tashiro and J. Xia and Megias, \{G. D.\} and L. Labarga and Ll Marti and B. Zaldivar and Pointon, \{B. W.\} and E. Kearns and Raaf, \{J. L.\} and L. Wan and T. Wester and J. Bian and Griskevich, \{N. J.\} and Kropp, \{W. R.\} and O. Drapier and M. Gonin and P. Paganini and B. Quilain",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s).; 37th International Cosmic Ray Conference, ICRC 2021 ; Conference date: 12-07-2021 Through 23-07-2021",

year = "2022",

month = mar,

day = "18",

language = "English",

volume = "395",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

}

TY - JOUR

T1 - Diffuse Supernova Neutrino Background Search at Super-Kamiokande

AU - The Super-Kamiokande Collaboration

AU - El Hedri, S.

AU - Ashida, Y.

AU - Giampaolo, A.

AU - Abe, K.

AU - Bronner, C.

AU - Hayato, Y.

AU - Hiraide, K.

AU - Ikeda, M.

AU - Kameda, J.

AU - Kanemura, Y.

AU - Kataoka, Y.

AU - Miki, S.

AU - Miura, M.

AU - Moriyama, S.

AU - Nagao, Y.

AU - Nakahata, M.

AU - Nakayama, S.

AU - Okamoto, K.

AU - Pronost, G.

AU - Sekiya, H.

AU - Shiozawa, M.

AU - Sonoda, Y.

AU - Suzuki, Y.

AU - Takeda, A.

AU - Takemoto, Y.

AU - Takenaka, A.

AU - Tanaka, H.

AU - Watanabe, S.

AU - Yano, T.

AU - Han, S.

AU - Kajita, T.

AU - Okumura, K.

AU - Tashiro, T.

AU - Xia, J.

AU - Megias, G. D.

AU - Labarga, L.

AU - Marti, Ll

AU - Zaldivar, B.

AU - Pointon, B. W.

AU - Kearns, E.

AU - Raaf, J. L.

AU - Wan, L.

AU - Wester, T.

AU - Bian, J.

AU - Griskevich, N. J.

AU - Kropp, W. R.

AU - Drapier, O.

AU - Gonin, M.

AU - Paganini, P.

AU - Quilain, B.

PY - 2022/3/18

Y1 - 2022/3/18

N2 - We present the results of a search for the Diffuse Supernova Neutrino Background (DSNB) at Super-Kamiokande (SK) that incorporates 22.5 × 2970 kton.days of data from its fourth data-taking phase. Two analyses, with different energy regimes covering the 9.3−81.3 MeV antineutrino energy range, have been developed based on previous SK searches, with substantially improved background modeling and data reduction techniques. Moreover, a combined analysis of nearly 20 years of SK data (1996-2018) has been performed, with a 90% C.L. sensitivity to the DSNB flux comparable to various DSNB predictions. No significant evidence for a DSNB signal has been observed, and both analyses set world-leading limits on the DSNB flux that can reach about 2.7νe.cm−2.s−1 for a wide range of models.

AB - We present the results of a search for the Diffuse Supernova Neutrino Background (DSNB) at Super-Kamiokande (SK) that incorporates 22.5 × 2970 kton.days of data from its fourth data-taking phase. Two analyses, with different energy regimes covering the 9.3−81.3 MeV antineutrino energy range, have been developed based on previous SK searches, with substantially improved background modeling and data reduction techniques. Moreover, a combined analysis of nearly 20 years of SK data (1996-2018) has been performed, with a 90% C.L. sensitivity to the DSNB flux comparable to various DSNB predictions. No significant evidence for a DSNB signal has been observed, and both analyses set world-leading limits on the DSNB flux that can reach about 2.7νe.cm−2.s−1 for a wide range of models.

M3 - Conference article

AN - SCOPUS:85145260138

SN - 1824-8039

VL - 395

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 1139

T2 - 37th International Cosmic Ray Conference, ICRC 2021

Y2 - 12 July 2021 through 23 July 2021

ER -

Diffuse Supernova Neutrino Background Search at Super-Kamiokande

Résumé

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