Search for neutron decay into an antineutrino and a neutral kaon in 0.401 megaton-years exposure of Super-Kamiokande
Search for neutron decay into an antineutrino and a neutral kaon in 0.401 megaton-years exposure of Super-Kamiokande
We searched for bound neutron decay via $n\to\bar{\nu}+K^0$ predicted by the Grand Unified Theories in 0.401 Mton$\cdot$years exposure of all pure water phases in the Super-Kamiokande detector. About 4.4 times more data than in the previous search have been analyzed by a new method including a spectrum fit to kaon invariant mass distributions. No significant data excess has been observed in the signal regions. As a result of this analysis, we set a lower limit of $7.8\times10^{32}$ years on the neutron lifetime at a 90% confidence level.
J. Y. Yang、J. Yoo、J. E. P. Fannon、L. Kneale、M. Malek、J. M. McElwee、T. Peacock、P. Stowell、M. D. Thiesse、L. F. Thompson、H. Okazawa、S. T. Wilson、S. M. Lakshmi、E. Kwon、M. W. Lee、J. W. Seo、I. Yu、A. K. Ichikawa、K. D. Nakamura、S. Tairafune、A. Eguchi、S. Goto、S. Kodama、Y. Mizuno、K. Nakagiri、T. Muro、Y. Nakajima、N. Taniuchi、E. Watanabe、M. Yokoyama、P. de Perio、C. Jesús-Valls、S. Fujita、K. Martens、K. M. Tsui、Ll. Marti、M. R. Vagins、J. Xia、S. Izumiyama、R. Asaka、M. Ishitsuka、M. Shinoki、M. Sugo、M. Wako、P. Govindaraj、M. Posiadala-Zezula、Y. S. Prabhu、S. B. Boyd、R. Edwards、R. Matsumoto、K. Terada、M. Kuze、T. Yoshida、Y. Nakano、F. Cormier、R. Gaur、V. Gousy-Leblanc、M. Hartz、A. Konaka、X. Li、B. R. Smithers、S. Chen、Y. Wu、B. D. Xu、A. Q. Zhang、B. Zhang、M. Girgus、M. O'Flaherty、B. Richards、A. Ali、B. Jamieson、S. Amanai、C. Bronner、D. Horiguchi、A. Minamino、Y. Sasaki、R. Shibayama、R. Shimamura、F. Nova、S. Jung、D. Hadley、M. Nicholson、Super-Kamiokande Collaboration、:、K. Yamauchi、K. Abe、S. Abe、Y. Asaoka、M. Harada、Y. Hayato、K. Hiraide、K. Hosokawa、K. Ieki、M. Ikeda、J. Kameda、Y. Kanemura、Y. Kataoka、S. Miki、S. Mine、M. Miura、S. Moriyama、M. Nakahata、S. Nakayama、Y. Noguchi、G. Pronost、K. Sato、H. Sekiya、K. Shimizu、R. Shinoda、M. Shiozawa、Y. Suzuki、A. Takeda、Y. Takemoto、H. Tanaka、T. Yano、Y. Itow、T. Kajita、R. Nishijima、K. Okumura、T. Tashiro、T. Tomiya、X. Wang、P. Fernandez、L. Labarga、D. Samudio、B. Zaldivar、B. W. Pointon、C. Yanagisawa、E. Kearns、J. Mirabito、L. Wan、T. Wester、J. Bian、B. Cortez、N. J. Griskevich、Y. Jiang、M. B. Smy、H. W. Sobel、V. Takhistov、A. Yankelevich、J. Hill、M. C. Jang、S. H. Lee、D. H. Moon、R. G. Park、B. S. Yang、B. Bodur、K. Scholberg、C. W. Walter、A. Beauchêne、O. Drapier、A. Ershova、Th. A. Mueller、A. D. Santos、P. Paganini、C. Quach、R. Rogly、T. Nakamura、J. S. Jang、R. P. Litchfield、L. N. Machado、F. J. P. Soler、J. G. Learned、K. Choi、N. Iovine、D. Tiwari、S. Cao、L. H. V. Anthony、D. Martin、N. W. Prouse、M. Scott、Y. Uchida、V. Berardi、N. F. Calabria、M. G. Catanesi、N. Ospina、E. Radicioni、A. Langella、G. De Rosa、G. Collazuol、M. Feltre、M. Mattiazzi、L. Ludovici、M. Gonin、L. Périssé、B. Quilain、S. Horiuchi、A. Kawabata、M. Kobayashi、Y. M. Liu、Y. Maekawa、Y. Nishimura、R. Okazaki、R. Akutsu、M. Friend、T. Hasegawa、Y. Hino、T. Ishida、T. Kobayashi、M. Jakkapu、T. Matsubara、T. Nakadaira、K. Nakamura、Y. Oyama、A. Portocarrero Yrey、K. Sakashita、T. Sekiguchi、T. Tsukamoto、N. Bhuiyan、G. T. Burton、F. Di Lodovico、J. Gao、T. Katori、J. Migenda、R. M. Ramsden、S. Zsoldos、H. Ito、T. Sone、A. T. Suzuki、Y. Takagi、Y. Takeuchi、S. Wada、H. Zhong、J. Feng、L. Feng、S. Han、J. Hikida、J. R. Hu、Z. Hu、M. Kawaue、T. Kikawa、T. Nakaya、T. V. Ngoc、R. A. Wendell、K. Yasutome、S. J. Jenkins、N. McCauley、A. Tarrant、M. Fanì、M. J. Wilking、Z. Xie、Y. Fukuda、H. Menjo、Y. Yoshioka、J. Lagoda、M. Mandal、J. Zalipska、M. Mori、M. Jia、J. Jiang、W. Shi、K. Hamaguchi、H. Ishino、Y. Koshio、F. Nakanishi、S. Sakai、T. Tada、T. Tano、T. Ishizuka、G. Barr、D. Barrow、L. Cook、S. Samani、D. Wark、A. Holin
物理学
J. Y. Yang,J. Yoo,J. E. P. Fannon,L. Kneale,M. Malek,J. M. McElwee,T. Peacock,P. Stowell,M. D. Thiesse,L. F. Thompson,H. Okazawa,S. T. Wilson,S. M. Lakshmi,E. Kwon,M. W. Lee,J. W. Seo,I. Yu,A. K. Ichikawa,K. D. Nakamura,S. Tairafune,A. Eguchi,S. Goto,S. Kodama,Y. Mizuno,K. Nakagiri,T. Muro,Y. Nakajima,N. Taniuchi,E. Watanabe,M. Yokoyama,P. de Perio,C. Jesús-Valls,S. Fujita,K. Martens,K. M. Tsui,Ll. Marti,M. R. Vagins,J. Xia,S. Izumiyama,R. Asaka,M. Ishitsuka,M. Shinoki,M. Sugo,M. Wako,P. Govindaraj,M. Posiadala-Zezula,Y. S. Prabhu,S. B. Boyd,R. Edwards,R. Matsumoto,K. Terada,M. Kuze,T. Yoshida,Y. Nakano,F. Cormier,R. Gaur,V. Gousy-Leblanc,M. Hartz,A. Konaka,X. Li,B. R. Smithers,S. Chen,Y. Wu,B. D. Xu,A. Q. Zhang,B. Zhang,M. Girgus,M. O'Flaherty,B. Richards,A. Ali,B. Jamieson,S. Amanai,C. Bronner,D. Horiguchi,A. Minamino,Y. Sasaki,R. Shibayama,R. Shimamura,F. Nova,S. Jung,D. Hadley,M. Nicholson,Super-Kamiokande Collaboration,:,K. Yamauchi,K. Abe,S. Abe,Y. Asaoka,M. Harada,Y. Hayato,K. Hiraide,K. Hosokawa,K. Ieki,M. Ikeda,J. Kameda,Y. Kanemura,Y. Kataoka,S. Miki,S. Mine,M. Miura,S. Moriyama,M. Nakahata,S. Nakayama,Y. Noguchi,G. Pronost,K. Sato,H. Sekiya,K. Shimizu,R. Shinoda,M. Shiozawa,Y. Suzuki,A. Takeda,Y. Takemoto,H. Tanaka,T. Yano,Y. Itow,T. Kajita,R. Nishijima,K. Okumura,T. Tashiro,T. Tomiya,X. Wang,P. Fernandez,L. Labarga,D. Samudio,B. Zaldivar,B. W. Pointon,C. Yanagisawa,E. Kearns,J. Mirabito,L. Wan,T. Wester,J. Bian,B. Cortez,N. J. Griskevich,Y. Jiang,M. B. Smy,H. W. Sobel,V. Takhistov,A. Yankelevich,J. Hill,M. C. Jang,S. H. Lee,D. H. Moon,R. G. Park,B. S. Yang,B. Bodur,K. Scholberg,C. W. Walter,A. Beauchêne,O. Drapier,A. Ershova,Th. A. Mueller,A. D. Santos,P. Paganini,C. Quach,R. Rogly,T. Nakamura,J. S. Jang,R. P. Litchfield,L. N. Machado,F. J. P. Soler,J. G. Learned,K. Choi,N. Iovine,D. Tiwari,S. Cao,L. H. V. Anthony,D. Martin,N. W. Prouse,M. Scott,Y. Uchida,V. Berardi,N. F. Calabria,M. G. Catanesi,N. Ospina,E. Radicioni,A. Langella,G. De Rosa,G. Collazuol,M. Feltre,M. Mattiazzi,L. Ludovici,M. Gonin,L. Périssé,B. Quilain,S. Horiuchi,A. Kawabata,M. Kobayashi,Y. M. Liu,Y. Maekawa,Y. Nishimura,R. Okazaki,R. Akutsu,M. Friend,T. Hasegawa,Y. Hino,T. Ishida,T. Kobayashi,M. Jakkapu,T. Matsubara,T. Nakadaira,K. Nakamura,Y. Oyama,A. Portocarrero Yrey,K. Sakashita,T. Sekiguchi,T. Tsukamoto,N. Bhuiyan,G. T. Burton,F. Di Lodovico,J. Gao,T. Katori,J. Migenda,R. M. Ramsden,S. Zsoldos,H. Ito,T. Sone,A. T. Suzuki,Y. Takagi,Y. Takeuchi,S. Wada,H. Zhong,J. Feng,L. Feng,S. Han,J. Hikida,J. R. Hu,Z. Hu,M. Kawaue,T. Kikawa,T. Nakaya,T. V. Ngoc,R. A. Wendell,K. Yasutome,S. J. Jenkins,N. McCauley,A. Tarrant,M. Fanì,M. J. Wilking,Z. Xie,Y. Fukuda,H. Menjo,Y. Yoshioka,J. Lagoda,M. Mandal,J. Zalipska,M. Mori,M. Jia,J. Jiang,W. Shi,K. Hamaguchi,H. Ishino,Y. Koshio,F. Nakanishi,S. Sakai,T. Tada,T. Tano,T. Ishizuka,G. Barr,D. Barrow,L. Cook,S. Samani,D. Wark,A. Holin.Search for neutron decay into an antineutrino and a neutral kaon in 0.401 megaton-years exposure of Super-Kamiokande[EB/OL].(2025-06-17)[2025-07-02].https://arxiv.org/abs/2506.14406.点此复制
评论