Supernova Relic Neutrino Search with Neutron Tagging at Super-Kamiokande-IV

H Zhang,T Mclachlan,J Kameda,S B Kim,Koji Suzuki,W E Keig,Takako Yokozawa,Hiroo Sekiya,Kun Huang,Y Choi,T Mori,J Hignight,A Suzuki,K Sakashita, Toshiaki Yano,H Ishino,L Sulak,Y Totsuka,G Mitsuka,Masanobu Ikeda,Y Takeuchi,S Tobayama,Masanori Koshiba,K S Ganezer,M Sakuda,Yoshitaka Kuno,S Nakayama,T Wongjirad,E Kearns,T Nakaya,Yoshio Fukuda,Akihiko Takeda,A Konaka,A Renshaw,Takeshi Sekiguchi,R J Wilkes,Yukiko Nakano,K Okumura,M R Vagins,T Kajita,M Shiozawa,K Bays,Z Yang,I T Lim,H W Sobel,K Ueno,J F Martin,M Yokoyama,T Tsukamoto,M Nakahata,T Kobayashi,K Iyogi,K Nishijima,S Berkman,K Scholberg,T Akiri,S Mine,Masanori Miura,K Nishikawa,Y Takenaga,J S Jang,S Takahashi,P Mijakowski, Ryo Yamaguchi,J Imber,Y Koshio,Y Nishimura,K Martens,Jin Young Kim,Kelvin P Lee,T Ishizuka,M J Wilking,Hidekazu Tanaka,K Connolly,S Matsuno,K Nakamura,M Dziomba,Y Hayato,P De Perio,Ll Marti,L Labarga,R Wendell,M Goldhaber,T Kikawa,R Tacik,K Abe,J L Stone,J C Hill,T Ishii,I J Taylor,M B Smy,Y Oyama,G Carminati,K Choi,C K Jung,C Yanagisawa,A Kibayashi,H Kaji,Yumiko Suzuki,S Moriyama,Y Kishimoto,C W Walter,Y Itow,W R Kropp,J G Learned,K Kaneyuki,S N Smith,A Minamino,Hongshu Sui, Yi Zhang,J L Raaf,T Nakadaira,H Okazawa,S Chen,K Ieki,Toshiaki Ishida,T Tomura,T Hasegawa,A Murakami,Shuji Tasaka

Astroparticle Physics（2015）

Cited 99|Views30

No score

Abstract

A search for Supernova Relic Neutrinos ν¯e’s is first conducted via inverse-beta-decay by tagging neutron capture on hydrogen at Super-Kamiokande-IV. The neutron tagging efficiency is determined to be (17.74±0.04stat.±1.05sys.)%, while the corresponding accidental background probability is (1.06±0.01stat.±0.18sys.)%. Using 960days of data, we obtain 13 inverse-beta-decay candidates in the range of Eν¯e between 13.3MeV and 31.3MeV. All of the observed candidates are attributed to background. Upper limits at 90% C.L. are calculated in the absence of a signal.

Translated text

Key words

Neutron tagging,Water Cherenkov detector,Hydrogen,Supernova Relic Neutrinos

AI Read Science

Must-Reading Tree

Example

Generate MRT to find the research sequence of this paper

Chat Paper

Summary is being generated by the instructions you defined