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Search for nucleon decay via and in 0.484 Mton-year of Super-Kamiokande data

Publication ,  Journal Article
Jung, S; Abe, K; Asaoka, Y; Harada, M; Hayato, Y; Hiraide, K; Hung, TH; Ieki, K; Ikeda, M; Kameda, J; Kanemura, Y; Kataoka, Y; Miki, S ...
Published in: Physical Review D
January 30, 2026

We present the results of searches for nucleon decays via and using a exposure of Super-Kamiokande I-V data covering the entire pure water phase of the experiment. Various improvements on the previous 2014 nucleon decay search [], which used an exposure of , are incorporated. The physics models related to pion production and nuclear interaction are refined with external data, and a more comprehensive set of systematic uncertainties, now including those associated with the atmospheric neutrino flux and pion production channels, is considered. Also, the fiducial volume has been expanded by 21%. No significant indication of a nucleon decay signal is found beyond the expected background. Lower bounds on the nucleon partial lifetimes are determined to be for and for at 90% confidence level.

Duke Scholars

Published In

Physical Review D

DOI

EISSN

2470-0029

ISSN

2470-0010

Publication Date

January 30, 2026

Volume

113

Issue

1

Publisher

American Physical Society (APS)
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Jung, S., Abe, K., Asaoka, Y., Harada, M., Hayato, Y., Hiraide, K., … Shimamura, R. (2026). Search for nucleon decay via p ν π + and n ν π 0 in 0.484 Mton-year of Super-Kamiokande data. Physical Review D, 113(1). https://doi.org/10.1103/gwc6-55bg
Jung, S., K. Abe, Y. Asaoka, M. Harada, Y. Hayato, K. Hiraide, T. H. Hung, et al. “Search for nucleon decay via p ν π + and n ν π 0 in 0.484 Mton-year of Super-Kamiokande data.” Physical Review D 113, no. 1 (January 30, 2026). https://doi.org/10.1103/gwc6-55bg.
Jung S, Abe K, Asaoka Y, Harada M, Hayato Y, Hiraide K, et al. Search for nucleon decay via p ν π + and n ν π 0 in 0.484 Mton-year of Super-Kamiokande data. Physical Review D. 2026 Jan 30;113(1).
Jung, S., et al. “Search for nucleon decay via p ν π + and n ν π 0 in 0.484 Mton-year of Super-Kamiokande data.” Physical Review D, vol. 113, no. 1, American Physical Society (APS), Jan. 2026. Crossref, doi:10.1103/gwc6-55bg.
Jung S, Abe K, Asaoka Y, Harada M, Hayato Y, Hiraide K, Hung TH, Ieki K, Ikeda M, Kameda J, Kanemura Y, Kataoka Y, Miki S, Mine S, Miura M, Moriyama S, Nakagiri K, Nakahata M, Nakayama S, Noguchi Y, Pronost G, Sato K, Sekiya H, Shinoda R, Shiozawa M, Suzuki Y, Takeda A, Takemoto Y, Tanaka H, Yano T, Chen S, Itow Y, Kajita T, Nishijima R, Okumura K, Tashiro T, Tomiya T, Wang X, Fernandez P, Labarga L, Samudio D, Zaldivar B, Yanagisawa C, Jargowsky B, Kearns E, Mirabito J, Wan L, Wester T, Pointon BW, Bian J, Cortez B, Griskevich NJ, Jiang Y, Smy MB, Sobel HW, Takhistov V, Yankelevich A, Hill J, Moon DH, Park RG, Yang BS, Scholberg K, Walter CW, Drapier O, Ershova A, Ferey M, Le Blévec E, Mueller TA, Paganini P, Quach C, Rogly R, Nakamura T, Jang JS, Litchfield RP, Machado LN, Soler FJP, Learned JG, Choi K, Cao S, Anthony LHV, Prouse NW, Scott M, Uchida Y, Berardi V, Calabria NF, Catanesi MG, Ospina N, Radicioni E, Langella A, De Rosa G, Collazuol G, Feltre M, Mattiazzi M, Ludovici L, Gonin M, Périssé L, Quilain B, Horiuchi S, Kawabata A, Kobayashi M, Liu YM, Maekawa Y, Nishimura Y, Akutsu R, Friend M, Hasegawa T, Hino Y, Ishida T, Kobayashi T, Matsubara T, Nakadaira T, Oyama Y, Portocarrero Yrey A, Sakashita K, Sekiguchi T, Bhuiyan N, Burton GT, Di Lodovico F, Katori T, Kralik R, Latham N, Ramsden RM, Ito H, Sone T, Suzuki AT, Takeuchi Y, Wada S, Zhong H, Feng J, Feng L, Han S, Hikida J, Hu JR, Hu Z, Kawaue M, Kikawa T, Nakaya T, Ngoc TV, Wendell RA, Jenkins SJ, McCauley N, Tarrant A, Fanì M, Wilking MJ, Xie Z, Fukuda Y, Menjo H, Yoshioka Y, Lagoda J, Mandal M, Zalipska J, Mori M, Jiang J, Hamaguchi K, Ishino H, Koshio Y, Nakanishi F, Tada T, Ishizuka T, Barr G, Barrow D, Cook L, Samani S, Wark D, Holin A, Nova F, Yoo J, Fannon JEP, Kneale L, Peacock T, Stowell P, Okazawa H, Lakshmi SM, Kwon E, Lee MW, Seo JW, Yu I, Ashida Y, Ichikawa AK, Nakamura KD, Abe S, Goto S, Hayasaki H, Kodama S, Kong Y, Masaki Y, Mizuno Y, Muro T, Nakajima Y, Taniuchi N, Yokoyama M, de Perio P, Fujita S, Jesús-Valls C, Martens K, Marti L, Santos AD, Tsui KM, Vagins MR, Kuze M, Izumiyama S, Matsumoto R, Asaka R, Ishitsuka M, Sugo M, Wako M, Yamauchi K, Nakano Y, Cormier F, Gaur R, Hartz M, Konaka A, Li X, Smithers BR, Wu Y, Xu BD, Zhang AQ, Zhang B, Adhikary H, Girgus M, Govindaraj P, Posiadala-Zezula M, Prabhu YS, Boyd SB, Edwards R, Hadley D, O’Flaherty M, Richards B, Ali A, Jamieson B, Bronner C, Horiguchi D, Minamino A, Sasaki Y, Shibayama R, Shimamura R. Search for nucleon decay via p ν π + and n ν π 0 in 0.484 Mton-year of Super-Kamiokande data. Physical Review D. American Physical Society (APS); 2026 Jan 30;113(1).

Published In

Physical Review D

DOI

EISSN

2470-0029

ISSN

2470-0010

Publication Date

January 30, 2026

Volume

113

Issue

1

Publisher

American Physical Society (APS)