Diffuse Supernova Neutrino Background Search at Super-Kamiokande

The Super-Kamiokande Collaboration

Diffuse Supernova Neutrino Background Search at Super-Kamiokande

The Super-Kamiokande Collaboration

Physics and Astronomy

Stony Brook University

CNRS-IN2P3
Kyoto University
The University of Tokyo
Universidad Autónoma de Madrid
City University of New York
British Columbia Institute of Technology
TRIUMF
Boston University
University of California at Irvine

Research output: Contribution to journal › Conference article › peer-review

Abstract

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.

Original language	English
Article number	1139
Journal	Proceedings of Science
Volume	395
State	Published - Mar 18 2022
Event	37th International Cosmic Ray Conference, ICRC 2021 - Virtual, Berlin, Germany Duration: Jul 12 2021 → Jul 23 2021

Cite this

@article{b2305a77b1c942ee985c8c6c92575869,

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 × 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 S. Locke and S. Mine and Smy, \{M. B.\} and Jung, \{C. K.\}",

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",

}

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 - Locke, S.

AU - Mine, S.

AU - Smy, M. B.

AU - Jung, C. K.

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.

UR - https://www.scopus.com/pages/publications/85145260138

M3 - Conference article

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

Abstract

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