First result of a search for Diffuse Supernova Neutrino Background in SK-Gd experiment

Super-Kamiokande Collaboration

First result of a search for Diffuse Supernova Neutrino Background in SK-Gd experiment

Super-Kamiokande Collaboration

Okayama University
University of Tokyo
Long Beach VA and University of California
Universidad Autónoma de Madrid
British Columbia Institute of Technology
TRIUMF
Boston University
High Energy Accelerator Research Organization (KEK)
California State University, Dominguez Hills
Chonnam National University
Duke University
Ip Paris
Gifu University
Gwangju Institute of Science and Technology
University of Glasgow
University of Hawaii
Institute for Basic Science (IBS)
ICISE
Imperial College London
Politecnico di Bari
University of Naples Federico II
University of Padova
University of Rome
Keio University
King's College London
Kobe University
Kyoto University
University of Liverpool
Miyagi University of Education
Nagoya University
National Centre for Nuclear Research (NCBJ)
Stony Brook University
York College/The City University of New York
Osaka Electro-Communication University
University of Oxford
CCLRC Rutherford Appleton Laboratory
Seoul National University
The University of Sheffield
Shizuoka University of Welfare
Sungkyunkwan University
Tohoku University
Tokai University
Tokyo Institute of Technology
Tokyo University of Science
University of Victoria
Tsinghua University
University of Warsaw
University of Warwick
University of Winnipeg
Yokohama National University

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

Résumé

Since 2020, Super-Kamiokande (SK) detector has been updated by loading gadolinium (Gd) as a new experimental phase, ‘SK-Gd.’ In the SK-Gd experiment, we can search low-energy electron antineutrinos via inverse-beta decay with efficient neutron identification thanks to high cross-section and high-energy gamma-ray emission of thermal neutron capture on Gd. Until July 2022, the observation is operated with the 0.01% Gd mass concentration. The neutron capture fraction on Gd is about 50% in this situation. In this paper, the first search result for the flux of astrophysical electron antineutrinos for the energy range of O(10) MeV in SK-Gd with a 22.5 × 552 kton·day exposure at 0.01% Gd mass concentration of the initial stage of SK-Gd is reported.

langue originale	Anglais
Numéro d'article	1173
journal	Proceedings of Science
Volume	444
état	Publié - 27 sept. 2024
Evénement	38th International Cosmic Ray Conference, ICRC 2023 - Nagoya, Japon Durée: 26 juil. 2023 → 3 août 2023

Contient cette citation

@article{131ee9a2d11d4d3f86afbb0eae4d976a,

title = "First result of a search for Diffuse Supernova Neutrino Background in SK-Gd experiment",

abstract = "Since 2020, Super-Kamiokande (SK) detector has been updated by loading gadolinium (Gd) as a new experimental phase, {\textquoteleft}SK-Gd.{\textquoteright} In the SK-Gd experiment, we can search low-energy electron antineutrinos via inverse-beta decay with efficient neutron identification thanks to high cross-section and high-energy gamma-ray emission of thermal neutron capture on Gd. Until July 2022, the observation is operated with the 0.01\% Gd mass concentration. The neutron capture fraction on Gd is about 50\% in this situation. In this paper, the first search result for the flux of astrophysical electron antineutrinos for the energy range of O(10) MeV in SK-Gd with a 22.5 × 552 kton·day exposure at 0.01\% Gd mass concentration of the initial stage of SK-Gd is reported.",

author = "\{Super-Kamiokande Collaboration\} and M. Harada and K. Abe and C. Bronner and Y. Hayato and K. Hiraide and K. Hosokawa and K. Ieki and M. Ikeda and J. Kameda and Y. Kanemura and R. Kaneshima and Y. Kashiwagi and Y. Kataoka and S. Miki and S. Mine and M. Miura and S. Moriyama and Y. Nakano and M. Nakahata and S. Nakayama and Y. Noguchi and K. Sato and H. Sekiya and H. Shiba and K. Shimizu and M. Shiozawa and Y. Sonoda and Y. Suzuki and A. Takeda and Y. Takemoto and H. Tanaka and T. Yano and S. Han and T. Kajita and K. Okumura and T. Tashiro and T. Tomiya and X. Wang and S. Yoshida and P. Fernandez and L. Labarga and N. Ospina and B. Zaldivar and Pointon, \{B. W.\} and E. Kearns and Raaf, \{J. L.\} and O. Drapier and P. Paganini and B. Quilain and M. Gonin",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons.; 38th International Cosmic Ray Conference, ICRC 2023 ; Conference date: 26-07-2023 Through 03-08-2023",

year = "2024",

month = sep,

day = "27",

language = "English",

volume = "444",

journal = "Proceedings of Science",

issn = "1824-8039",

}

TY - JOUR

T1 - First result of a search for Diffuse Supernova Neutrino Background in SK-Gd experiment

AU - Super-Kamiokande Collaboration

AU - Harada, M.

AU - Abe, K.

AU - Bronner, C.

AU - Hayato, Y.

AU - Hiraide, K.

AU - Hosokawa, K.

AU - Ieki, K.

AU - Ikeda, M.

AU - Kameda, J.

AU - Kanemura, Y.

AU - Kaneshima, R.

AU - Kashiwagi, Y.

AU - Kataoka, Y.

AU - Miki, S.

AU - Mine, S.

AU - Miura, M.

AU - Moriyama, S.

AU - Nakano, Y.

AU - Nakahata, M.

AU - Nakayama, S.

AU - Noguchi, Y.

AU - Sato, K.

AU - Sekiya, H.

AU - Shiba, H.

AU - Shimizu, K.

AU - Shiozawa, M.

AU - Sonoda, Y.

AU - Suzuki, Y.

AU - Takeda, A.

AU - Takemoto, Y.

AU - Tanaka, H.

AU - Yano, T.

AU - Han, S.

AU - Kajita, T.

AU - Okumura, K.

AU - Tashiro, T.

AU - Tomiya, T.

AU - Wang, X.

AU - Yoshida, S.

AU - Fernandez, P.

AU - Labarga, L.

AU - Ospina, N.

AU - Zaldivar, B.

AU - Pointon, B. W.

AU - Kearns, E.

AU - Raaf, J. L.

AU - Drapier, O.

AU - Paganini, P.

AU - Quilain, B.

AU - Gonin, M.

PY - 2024/9/27

Y1 - 2024/9/27

N2 - Since 2020, Super-Kamiokande (SK) detector has been updated by loading gadolinium (Gd) as a new experimental phase, ‘SK-Gd.’ In the SK-Gd experiment, we can search low-energy electron antineutrinos via inverse-beta decay with efficient neutron identification thanks to high cross-section and high-energy gamma-ray emission of thermal neutron capture on Gd. Until July 2022, the observation is operated with the 0.01% Gd mass concentration. The neutron capture fraction on Gd is about 50% in this situation. In this paper, the first search result for the flux of astrophysical electron antineutrinos for the energy range of O(10) MeV in SK-Gd with a 22.5 × 552 kton·day exposure at 0.01% Gd mass concentration of the initial stage of SK-Gd is reported.

AB - Since 2020, Super-Kamiokande (SK) detector has been updated by loading gadolinium (Gd) as a new experimental phase, ‘SK-Gd.’ In the SK-Gd experiment, we can search low-energy electron antineutrinos via inverse-beta decay with efficient neutron identification thanks to high cross-section and high-energy gamma-ray emission of thermal neutron capture on Gd. Until July 2022, the observation is operated with the 0.01% Gd mass concentration. The neutron capture fraction on Gd is about 50% in this situation. In this paper, the first search result for the flux of astrophysical electron antineutrinos for the energy range of O(10) MeV in SK-Gd with a 22.5 × 552 kton·day exposure at 0.01% Gd mass concentration of the initial stage of SK-Gd is reported.

M3 - Conference article

AN - SCOPUS:85189357815

SN - 1824-8039

VL - 444

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 1173

T2 - 38th International Cosmic Ray Conference, ICRC 2023

Y2 - 26 July 2023 through 3 August 2023

ER -

First result of a search for Diffuse Supernova Neutrino Background in SK-Gd experiment

Résumé

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