Search for proton decay via $p\to e^+\pi^0$ and $p\to \mu^+\pi^0$ with an enlarged fiducial volume in Super-Kamiokande I-IV
- Takenaka, A.
- Abe, K.
- Bronner, C.
- Hayato, Y.
- Ikeda, M.
- Imaizumi, S.
- Ito, H.
- Kameda, J.
- Kataoka, Y.
- Kato, Y.
- Kishimoto, Y.
- Marti, Ll.
- Miura, M.
- Moriyama, S.
- Mochizuki, T.
- Nagao, Y.
- Nakahata, M.
- Nakajima, Y.
- Nakayama, S.
- Okada, T.
- Orii, A.
- Pronost, G.
- Sekiya, H.
- Shiozawa, M.
- Sonoda, Y.
- Suzuki, Y.
- Takeda, A.
- Takemoto, Y.
- Yano, T.
- Akutsu, R.
- Han, S.
- Kajita, T.
- Okumura, K.
- Tashiro, T.
- Wang, R.
- Xia, J.
- Bravo-Berguño, D.
- Labarga, L.
- Fernandez, P.
- Zaldivar, B.
- Blaszczyk, F.D.M.
- Kearns, E.
- Raaf, J.L.
- Stone, J.L.
- Wan, L.
- Wester, T.
- Pointon, B.W.
- Bian, J.
- Griskevich, N.J.
- Kropp, W.R.
- Locke, S.
- Mine, S.
- Smy, M.B.
- Sobel, H.W.
- Takhistov, V.
- Weatherly, P.
- Ganezer, K.S.
- Hill, J.
- Kim, J.Y.
- Lim, I.T.
- Park, R.G.
- Bodur, B.
- Scholberg, K.
- Walter, C.W.
- Coffani, A.
- Drapier, O.
- El Hedri, S.
- Giampaolo, A.
- Gonin, M.
- Mueller, Th.A.
- Paganini, P.
- Quilain, B.
- Ishizuka, T.
- Nakamura, T.
- Jang, J.S.
- Learned, J.G.
- Matsuno, S.
- Anthony, L.H.V.
- Litchfield, R.P.
- Sztuc, A.A.
- Uchida, Y.
- Berardi, V.
- Catanesi, M.G.
- Radicioni, E.
- Calabria, N.F.
- Machado, L.N.
- de Rosa, G.
- Collazuol, G.
- Iacob, F.
- Lamoureux, M.
- Ospina, N.
- Ludovici, L.
- Nishimura, Y.
- Cao, S.
- Friend, M.
- Hasegawa, T.
- Ishida, T.
- Jakkapu, M.
- Kobayashi, T.
- Matsubara, T.
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- Oyama, Y.
- Sakashita, K.
- Sekiguchi, T.
- Tsukamoto, T.
- Hasegawa, M.
- Isobe, Y.
- Miyabe, H.
- Nakano, Y.
- Shiozawa, T.
- Sugimoto, T.
- Suzuki, A.T.
- Takeuchi, Y.
- Yamamoto, S.
- Ali, A.
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- Feng, J.
- Hirota, S.
- Ichikawa, A.K.
- Jiang, M.
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- Wendell, R.A.
- Yasutome, K.
- Mccauley, N.
- Mehta, P.
- Pritchard, A.
- Tsui, K.M.
- Fukuda, Y.
- Itow, Y.
- Menjo, H.
- Niwa, T.
- Sato, K.
- Taani, M.
- Tsukada, M.
- Mijakowski, P.
- Frankiewicz, K.
- Jung, C.K.
- Santucci, G.
- Vilela, C.
- Wilking, M.J.
- Yanagisawa, C.
- Fukuda, D.
- Harada, M.
- Hagiwara, K.
- Horai, T.
- Ishino, H.
- Ito, S.
- Koshio, Y.
- Ma, W.
- Piplani, N.
- Sakai, S.
- Sakuda, M.
- Takahira, Y.
- Xu, C.
- Kuno, Y.
- Barr, G.
- Barrow, D.
- Cook, L.
- Simpson, C.
- Wark, D.
- Nova, F.
- Boschi, T.
- Di Lodovico, F.
- Molina Sedgwick, S.
- Zsoldos, S.
- Yang, J.Y.
- Jenkins, S.J.
- Mcelwee, J.M.
- Thiesse, M.D.
- Thompson, L.F.
- Okazawa, H.
- Choi, Y.
- Kim, S.B.
- Yu, I.
- Nishijima, K.
- Koshiba, M.
- Iwamoto, K.
- Ogawa, N.
- Yokoyama, M.
- Goldsack, A.
- Martens, K.
- Vagins, M.R.
- Kuze, M.
- Tanaka, M.
- Yoshida, T.
- Inomoto, M.
- Ishitsuka, M.
- Matsumoto, R.
- Ohta, K.
- Shinoki, M.
- Martin, J.F.
- Nantais, C.M.
- Tanaka, H.A.
- Towstego, T.
- Hartz, M.
- Konaka, A.
- de Perio, P.
- Prouse, N.W.
- Chen, S.
- Xu, B.D.
- Posiadala-Zezula, M.
- Richards, B.
- Jamieson, B.
- Walker, J.
- Minamino, A.
- Okamoto, K.
- Pintaudi, G.
- Sasaki, R.
DOIAbstract
International audienceWe have searched for proton decay via $p\to e^+\pi^0$ and $p\to \mu^+\pi^0$ modes with the enlarged fiducial volume data of Super-Kamiokande from April 1996 to May 2018, which corresponds to 450 kton$\cdot$years exposure. We have accumulated about 25% more livetime and enlarged the fiducial volume of the Super-Kamiokande detector from 22.5 kton to 27.2 kton for this analysis, so that 144 kton$\cdot$years of data, including 78 kton$\cdot$years of additional fiducial volume data, has been newly analyzed. No candidates have been found for $p\to e^+\pi^0$ and one candidate remains for $p\to \mu^+\pi^0$ in the conventional 22.5 kton fiducial volume and it is consistent with the atmospheric neutrino background prediction. We...
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