BibTex format
@inproceedings{Shinoki:2024,
author = {Shinoki, M and Abe, K and Bronner, C and Hayato, Y and Hiraide, K and Hosokawa, K and Ieki, K and Ikeda, M and Kameda, J and Kanemura, Y and Kaneshima, R and Kashiwagi, Y and Kataoka, Y and Miki, S and Mine, S and Miura, M and Moriyama, S and Nakano, Y and Nakahata, M and Nakayama, S and Noguchi, Y and Sato, K and Sekiya, H and Shiba, H and Shimizu, K and Shiozawa, M and Sonoda, Y and Suzuki, Y and Takeda, A and Takemoto, Y and Tanaka, H and Yano, T and Han, S and Kajita, T and Okumura, K and Tashiro, T and Tomiya, T and Wang, X and Yoshida, S and Fernandez, P and Labarga, L and Ospina, N and Zaldivar, B and Pointon, BW and Kearns, E and Raaf, JL and Wan, L and Wester, T and Bian, J and Griskevich, NJ and Locke, S and Smy, MB and Sobel, HW and Takhistov, V and Yankelevich, A and Hill, J and Lee, SH and Moon, DH and Park, RG and Bodur, B and Scholberg, K and Walter, CW and Beauchêne, A and Drapier, O and Giampaolo, A and Mueller, TA and Santos, AD and Paganini, P and Quilain, B an},
title = {Measurement of cosmogenic 9Li in Super-Kamiokande with gadolinium loaded water},
year = {2024}
}
RIS format (EndNote, RefMan)
TY - CPAPER
AB - Super-Kamiokande is a large water Cherenkov detector located approximately 1,000 m underground in Kamioka, Japan. The detector is a cylindrical tank 39.3 m in diameter and 41.4 m high, filled with about 50 kton of gadolinium loaded water. We measured <sup>9</sup>Li isotopic nuclei produced by muon spallation using the data taken from 2020 to 2022 by the Super-Kamiokande detector with 0.011% gadolinium concentration in water. Cosmic-ray muons that penetrate the detector form hadron showers in water and secondary hadrons produce unstable radioisotopes through the spallation. Among those spallation products, <sup>9</sup>Li is a long-lived radioactive isotope with a lifetime of about 0.26 seconds. It emits an electron and a neutron at a branching ratio of 50.8%, which is difficult to distinguish from the inverse beta decay caused by electron antineutrinos. Therefore, <sup>9</sup>Li is one of the main background sources in the observation of diffuse supernova neutrino background. In this study, the energy spectrum of the electrons was measured with a threshold at 4.5 MeV which is lowered from the previous result with pure water. We will report the analysis method and results.
AU - Shinoki,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,BW
AU - Kearns,E
AU - Raaf,JL
AU - Wan,L
AU - Wester,T
AU - Bian,J
AU - Griskevich,NJ
AU - Locke,S
AU - Smy,MB
AU - Sobel,HW
AU - Takhistov,V
AU - Yankelevich,A
AU - Hill,J
AU - Lee,SH
AU - Moon,DH
AU - Park,RG
AU - Bodur,B
AU - Scholberg,K
AU - Walter,CW
AU - Beauchêne,A
AU - Drapier,O
AU - Giampaolo,A
AU - Mueller,TA
AU - Santos,AD
AU - Paganini,P
AU - Quilain,B
AU - Nakamura,T
AU - Jang,JS
AU - Machado,LN
AU - Learned,JG
AU - Choi,K
AU - Iovine,N
AU - Cao,S
AU - Anthony,LHV
AU - Martin,D
AU - Prouse,NW
AU - Scott,M
AU - Sztuc,AA
AU - Uchida,Y
AU - Berardi,V
AU - Catanesi,MG
AU - Radicioni,E
AU - Calabria,NF
AU - Langella,A
AU - De,Rosa G
AU - Collazuol,G
AU - Iacob,F
AU - Mattiazzi,M
AU - Ludovici,L
AU - Gonin,M
AU - Pronost,G
AU - Fujisawa,C
AU - Maekawa,Y
AU - Nishimura,Y
AU - Okazaki,R
AU - Akutsu,R
AU - Friend,M
PY - 2024///
TI - Measurement of cosmogenic 9Li in Super-Kamiokande with gadolinium loaded water
ER -