Atmospheric Neutrino Background and Pion Nuclear Effect for KAMIOKA Nucleon Decay Experiment

Masayuki Nakahata; Katsushi Arisaka; Takaaki Kajita; Masatoshi Koshiba; Yuichi Oyama; Atsuto Suzuki; Masato Takita; Yoji Totsuka; Tadashi Kifune; Teruhiro Suda; Nobuaki Sato; Kasuke Takahashi; Kazumasa Miyano

doi:10.1143/JPSJ.55.3786

Masayuki Nakahata, Katsushi Arisaka, Takaaki Kajita, Masatoshi Koshiba, Yuichi Oyama, Atsuto Suzuki, Masato Takita, Yoji Totsuka, Tadashi Kifune, Teruhiro Suda, Nobuaki Sato, Kasuke Takahashi, Kazumasa Miyano

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1986 Volume 55 Issue 11 Pages 3786-3805

DOI https://doi.org/10.1143/JPSJ.55.3786

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Abstract

The main source of background for nucleon decay experiments is the interaction of atmospheric neutrinos in the detector. To estimate this background a Monte Carlo program was developed, which simulates the neutrino interactions and the nuclear effects of secondary pions. The program reproduced existing neutrino data as well as global features of the contained events in the KAMIOKA nucleon decay experiment. Neutrino induced background for nucleon decay was then calculated.

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