{"paper":{"title":"Search for Diffuse Supernova Neutrino Background with 956.2 days of Super-Kamiokande Gadolinium Dataset","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Ali, A. Beauch'ene, A. D. Santos, A. Ershova, A. Holin, A. Kawabata, A. K. Ichikawa, A. Konaka, A. Langella, A. Minamino, A. Portocarrero Yrey, A. Q. Zhang, A. Takeda, A. Tarrant, A. T. Suzuki, A. Yankelevich, B. Bodur, B. Cortez, B. D. Xu, B. Jamieson, B. Quilain, B. Richards, B. R. Smithers, B. S. Yang, B. W. Pointon, B. Zaldivar, B. Zhang, C. Bronner, C. Jes'us-Valls, C. Quach, C. W. Walter, C. Yanagisawa, D. Barrow, D. Hadley, D. H. Moon, D. Horiguchi, D. Samudio, D. Wark, E. Kearns, E. Kwon, E. Le Bl'evec, E. Radicioni, F. Cormier, F. Di Lodovico, F. J. P. Soler, F. Nakanishi, F. Nova, G. Barr, G. Collazuol, G. De Rosa, G. Pronost, G. T. Burton, H. Adhikary, H. Hayasaki, H. Ishino, H. Ito, H. Menjo, H. Okazawa, H. Sekiya, H. Tanaka, H. W. Sobel, H. Zhong, I. Yu, J. Bian, J. E. P. Fannon, J. Feng, J. Gao, J. G. Learned, J. Hikida, J. Hill, J. Jiang, J. Kameda, J. Lagoda, J. M. McElwee, J. R. Hu, J. S. Jang, J. W. Seo, J. Xia, J. Yoo, J. Zalipska, K. Abe, K. Choi, K. D. Nakamura, K. Hamaguchi, K. Hiraide, K. Hosokawa, K. Ieki, K. Martens, K. M. Tsui, K. Nakagiri, K. Okumura, K. Sakashita, K. Sato, K. Scholberg, K. Yamauchi, L. Cook, L. Feng, L. F. Thompson, L. H. V. Anthony, L. Kneale, L. Labarga, Ll. Marti, L. Ludovici, L. N. Machado, L. P'eriss'e, L. Wan, M. B. Smy, M. C. Jang, M. D. Thiesse, M. Fan`i, M. Feltre, M. Ferey, M. Friend, M. G. Catanesi, M. Girgus, M. Gonin, M. Harada, M. Hartz, M. Ikeda, M. Ishitsuka, M. Jakkapu, M. J. Wilking, M. Kawaue, M. Kobayashi, M. Kuze, M. Malek, M. Mandal, M. Mattiazzi, M. Miura, M. Mori, M. Nakahata, M. Nicholson, M. O'Flaherty, M. Posiadala-Zezula, M. R. Vagins, M. Scott, M. Shiozawa, M. Sugo, M. Wako, M. W. Lee, M. Yokoyama, N. Bhuiyan, N. F. Calabria, N. J. Griskevich, N. Latham, N. McCauley, N. Ospina, N. Taniuchi, N. W. Prouse, O. Drapier, P. de Perio, P. Fernandez, P. Govindaraj, P. Paganini, P. Stowell, R. Akutsu, R. Asaka, R. A. Wendell, R. Edwards, R. Gaur, R. G. Park, R. Kralik, R. Matsumoto, R. M. Ramsden, R. Nishijima, R. P. Litchfield, R. Rogly, R. Shibayama, R. Shimamura (The Super-Kamiokande Collaboration), R. Shinoda, S. Abe, S. B. Boyd, S. Cao, S. Chen, S. Fujita, S. Goto, S. Han, S. H. Lee, S. Horiuchi, S. Izumiyama, S. J. Jenkins, S. Jung, S. Kodama, S. Miki, S. Mine, S. M. Lakshmi, S. Moriyama, S. Nakayama, S. Samani, S. Wada, Th. A. Mueller, T. Hasegawa, T. H. Hung, T. Ishida, T. Ishizuka, T. Kajita, T. Katori, T. Kikawa, T. Kobayashi, T. Matsubara, T. Muro, T. Nakadaira, T. Nakamura, T. Nakaya, T. Peacock, T. Sekiguchi, T. Sone, T. Tada, T. Tashiro, T. Tomiya, T. Tsukamoto, T. V. Ngoc, T. Wester, T. Yano, V. Berardi, V. Takhistov, X. Li, X. Wang, Y. Asaoka, Y. Ashida, Y. Fukuda, Y. Hayato, Y. Hino, Y. Itow, Y. Jiang, Y. Kanemura, Y. Kataoka, Y. Kong, Y. Koshio, Y. Maekawa, Y. Masaki, Y. Mizuno, Y. M. Liu, Y. Nakajima, Y. Nakano, Y. Nishimura, Y. Noguchi, Y. Oyama, Y. Sasaki, Y. S. Prabhu, Y. Suzuki, Y. Takemoto, Y. Takeuchi, Y. Uchida, Y. Wu, Y. Yoshioka, Z. Hu, Z. Xie","submitted_at":"2025-11-04T03:30:40Z","abstract_excerpt":"We report the search result for the Diffuse Supernova Neutrino Background (DSNB) in neutrino energies beyond 9.3~MeV in the gadolinium-loaded Super-Kamiokande (SK) detector with $22,500\\times956.2$$~\\rm m^3\\cdot day$ exposure. %$22.5{\\rm k}\\times956.2$$~\\rm m^3\\cdot day$ exposure. Starting in the summer of 2020, SK introduced 0.01\\% gadolinium (Gd) by mass into its ultra-pure water to enhance the neutron capture signal, termed the SK-VI phase. This was followed by a 0.03\\% Gd-loading in 2022, a phase referred to as SK-VII. We then conducted a DSNB search using 552.2~days of SK-VI data and 404."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2511.02222","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2511.02222/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}